diff --git a/stable.js b/stable.js
index 1372c51..388535a 100644
--- a/stable.js
+++ b/stable.js
@@ -21,7 +21,7 @@
 
 // ==UserScript==
 // @name         Moodle/Elearning/KMOOC test help
-// @version      1.6.3.3
+// @version      1.6.4.0
 // @description  Online Moodle/Elearning/KMOOC test help
 // @author       MrFry
 // @match        https://elearning.uni-obuda.hu/main/*
@@ -36,7 +36,6 @@
 // @license      GNU General Public License v3.0 or later
 // @supportURL   qmining.frylabs.net
 // @contributionURL qmining.frylabs.net
-// @resource     data file:///<file path space is %20, and use "/"-s plz not "\" ty (and add .txt)// UTF-8 PLZ>
 // @namespace    https://greasyfork.org/users/153067
 // ==/UserScript==
 
@@ -47,14 +46,13 @@
   function getVal (name) { return GM_getValue(name) }
   function setVal (name, val) { return GM_setValue(name, val) }
   function openInTab (address, options) { GM_openInTab(address, options) }
-  function getResourceText (name) { return GM_getResourceText(name) }
   function xmlhttpRequest (opts) { GM_xmlhttpRequest(opts) }
   function info () { return GM_info }
   /* eslint-enable */
 
   var data // all data, which is in the resource txt
   var addEventListener // add event listener function
-  const lastChangeLog = 'Félév szerinti csoportosítás menüben'
+  const lastChangeLog = 'Kérdés parsolás bugfixek, old school fálj beolvasás kiszedése, részletesebb hibajelentés és egyéb fixek'
   const serverAdress = 'https://qmining.frylabs.net/'
 
   // forcing pages for testing. unless you test, do not set these to true!
@@ -73,9 +71,33 @@
   const minResultMatchPercent = 99 /* Minimum ammount to consider that two questions match during saving */
   const lengthDiffMultiplier = 10 /* Percent minus for length difference */
 
+  // ------------------------------------------------------------------------------
+  // Other constants
+  // ------------------------------------------------------------------------------
+  const commonUselessAnswerParts = [
+    'A helyes válasz az ',
+    'A helyes válasz a ',
+    'A helyes válaszok: ',
+    'A helyes válaszok:',
+    'A helyes válasz: ',
+    'A helyes válasz:',
+    'The correct answer is:',
+    '\''
+  ]
+  const commonUselessStringParts = [',', '\\.', ':', '!']
+  // ------------------------------------------------------------------------------
+
   // : Class descriptions {{{
 
   class StringUtils {
+    RemoveStuff (value, removableStrings) {
+      removableStrings.forEach((x) => {
+        var regex = new RegExp(x, 'g')
+        value = value.replace(regex, '')
+      })
+      return value
+    }
+
     SimplifyQuery (q) {
       assert(q)
 
@@ -102,7 +124,7 @@
       var toremove = this.NormalizeSpaces(val)
 
       var regex = new RegExp(char, 'g')
-      toremove.replace(regex, ' ')
+      toremove = toremove.replace(regex, ' ')
 
       return this.RemoveUnnecesarySpaces(toremove)
     }
@@ -123,12 +145,13 @@
       assert(value)
 
       value = this.RemoveUnnecesarySpaces(value).toLowerCase()
-      var removableChars = [',', '.', ':', '!']
-      for (var i = 0; i < removableChars.length; i++) {
-        var regex = new RegExp(removableChars[i], 'g')
-        value.replace(regex, '')
-      }
-      return value
+      return this.RemoveStuff(value, commonUselessStringParts)
+    }
+
+    RemoveSpecialChars (value) {
+      assert(value)
+
+      return this.RemoveStuff(value, ['&'])
     }
 
     // if the value is empty, or whitespace
@@ -149,6 +172,10 @@
       assert(s1)
       assert(s2)
 
+      if (s1 === '' || s2 === '') {
+        return 0
+      }
+
       s1 = this.SimplifyStringForComparison(s1).split(' ')
       s2 = this.SimplifyStringForComparison(s2).split(' ')
       var match = 0
@@ -161,12 +188,81 @@
       if (percent < 0) { percent = 0 }
       return percent
     }
+
+    AnswerPreProcessor (value) {
+      assert(value)
+
+      return this.RemoveStuff(
+        value, commonUselessAnswerParts)
+    }
+
+    // 'a. pécsi sör' -> 'pécsi sör'
+    RemoveAnswerLetters (value) {
+      assert(value)
+
+      let s = value.split('. ')
+      if (s[0].length < 2 && s.length > 1) {
+        return s.shift()
+      } else {
+        return value
+      }
+    }
+
+    SimplifyQA (value, mods) {
+      if (!value) { return }
+
+      const reducer = (res, fn) => {
+        return fn(res)
+      }
+
+      return mods.reduce(reducer, value)
+    }
+
+    SimplifyAnswer (value) {
+      return this.SimplifyQA(
+        value,
+        [
+          this.RemoveSpecialChars.bind(this),
+          this.RemoveUnnecesarySpaces.bind(this),
+          this.AnswerPreProcessor.bind(this),
+          this.RemoveAnswerLetters.bind(this)
+        ])
+    }
+
+    SimplifyQuestion (value) {
+      return this.SimplifyQA(
+        value,
+        [
+          this.RemoveSpecialChars.bind(this),
+          this.RemoveUnnecesarySpaces.bind(this)
+        ])
+    }
+
+    SimplifyStack (stack) {
+      stack = this.SimplifyQuery(stack)
+      let ns = ''
+      let adding = true
+      stack.split('').forEach((c) => {
+        if (c === '(') {
+          adding = false
+        }
+
+        if (adding) {
+          ns += c
+        }
+
+        if (c === ')') {
+          adding = true
+        }
+      })
+      return ns
+    }
   }
 
   class Question {
     constructor (q, a, i) {
-      this.Q = q
-      this.A = a
+      this.Q = SUtils.SimplifyQuestion(q)
+      this.A = SUtils.SimplifyAnswer(a)
       this.I = i
     }
 
@@ -625,15 +721,6 @@
       return this.GetFormCFOfResult(results[i]).getElementsByTagName('img')
     }
 
-    GetOnlyImageQuestionResult (i) {
-      console.log('############################################################')
-      console.log(i)
-      const results = this.GetFormResult() // getting results element
-      const n = results[i]
-      console.log(n)
-      console.log('############################################################')
-    }
-
     // gets the question from the result page
     // i is the index of the question
     GetQuestionFromResult (i) {
@@ -682,11 +769,6 @@
         if (RPM.GetDropboxes(i).length > 0) { return RPM.GetCurrentAnswer(i) }
       })
 
-      // image and text only question
-      fun.push(function TryGet5 (i) {
-        return RPM.GetOnlyImageQuestionResult(i)
-      })
-
       // if the correct answers are not shown, and the selected answer
       // is correct
       fun.push(function TryGet2 (i) {
@@ -810,11 +892,10 @@
           ShowMessage({
             m: 'Fatál error. Check console (f12). Kattints az üzenetre az összes kérdés/válaszért manuális kereséshez!',
             isSimple: true
-          }, undefined, function () {
-            openInTab(serverAdress + 'lred', {
-              active: true
-            })
+          }, undefined, () => {
+            OpenErrorPage(e)
           })
+
           Exception(e, 'script error at main:')
         }
         if (url.includes('eduplayer')) { AddVideoHotkeys(url) } // adding video hotkeys
@@ -899,13 +980,12 @@
   function Version15 () {
     var version15 = getVal('version15') // if the current run is the frst
     if (version15 === undefined || version15 === true) {
-      setVal('useNetDB', '1')
       setVal('version15', false)
       document.write(
         '<h1>Moodle teszt userscript:<h1><h3>1.5.0 verzió: a script mostantól XMLHTTP kéréseket küld szerver fele! Erre a userscript futtató kiegészitőd is figyelmeztetni fog! Ha ez történik, a script rendes működése érdekében engedélyezd (Always allow domain)! Ha nem akarod, hogy ez történjen, akkor ne engedélyezd, vagy a menüben válaszd ki a "helyi fájl használata" opciót!</h3> <h3>Elküldött adatok: minden teszt után a kérdés-válasz páros. Fogadott adatok: Az összes eddig ismert kérdés. Érdemes help-et elolvasni!!!</h3><h5>Ez az ablak frissités után eltűnik. Ha nem, akkor a visza gombbal próbálkozz.</h5>'
       )
       document.close()
-      throw 'something, so this stuff stops' // eslint-disable-line
+      throw new Error('something, so this stuff stops')
     }
   }
 
@@ -923,31 +1003,7 @@
 
   // : }}}
 
-  function GetFileData () {
-    return getResourceText('data')
-  }
-
-  function ReadFile (cwith) {
-    var resource = ''
-    try {
-      resource = GetFileData() // getting data from txt
-      if (resource === undefined) {
-        ShowMessage({
-          m: 'Nem lehetett beolvasni a fájlt :c Ellenőrizd az elérési utat, vagy a fájl jogosultságokat',
-          isSimple: true
-        })
-        return
-      }
-      if (SUtils.EmptyOrWhiteSpace(resource)) {
-        throw 'data file empty'  // eslint-disable-line
-      }
-    } catch (e) {
-      Exception(e, 'script error at reading file:')
-    }
-    NLoad(resource, cwith)
-  }
-
-  function ReadNetDB (cwith, useNetDB) {
+  function ReadNetDB (cwith) {
     function NewXMLHttpRequest () {
       const url = serverAdress + 'data.json'
       xmlhttpRequest({
@@ -970,105 +1026,7 @@
     }
   }
 
-  /*
-   * Returns a question database from the given data.
-   * Parameter should be raw read file in string with "\n"-s
-   * */
-  function ParseRawData (data) {
-    const d = data.split('\n')
-    const r = new QuestionDB()
-    var logs = []
-    var currSubj = '' // the current subjects name
-    var ExpectedIdentifier = ['+', '?']
-    let currQuestion = new Question()
-
-    var i = -1
-    while (i < d.length) {
-      let currIdentifier
-      let skipped = 0
-      do {
-        if (skipped >= 1) { logs.push(i + ': ' + d[i]) }
-        i++
-        if (i >= d.length) {
-          if (currQuestion.IsComplete()) { r.AddQuestion(currSubj, currQuestion) }
-          return {
-            result: r,
-            logs: logs
-          }
-        }
-        currIdentifier = d[i][0]
-        skipped++
-      } while (!ExpectedIdentifier.includes(currIdentifier) && i < d.length)
-
-      let currData = d[i].substring(1).trim()
-
-      if (currIdentifier === '+') {
-        if (currQuestion.IsComplete()) { r.AddQuestion(currSubj, currQuestion) }
-        currQuestion = new Question()
-        currSubj = currData
-        ExpectedIdentifier = ['?']
-        continue
-      }
-
-      if (currIdentifier === '?') {
-        if (currQuestion.IsComplete()) {
-          r.AddQuestion(currSubj, currQuestion)
-          currQuestion = new Question()
-        }
-        // overwriting is allowed here, bcus:
-        // ?????!>
-        currQuestion.Q = currData
-        ExpectedIdentifier = ['!', '?']
-        continue
-      }
-
-      if (currIdentifier === '!') {
-        // if dont have question continue
-        if (!currQuestion.HasQuestion()) {
-          throw 'No question! (A)' // eslint-disable-line
-        }
-        // dont allow overwriting
-        // ?!!!!
-        if (!currQuestion.HasAnswer()) {
-          currData = currData.replace('A helyes válaszok: ', '')
-          currData = currData.replace('A helyes válasz: ', '')
-
-          currQuestion.A = currData
-        }
-        ExpectedIdentifier = ['?', '>', '+']
-        continue
-      }
-
-      if (currIdentifier === '>') {
-        // if dont have question or answer continue
-        if (!currQuestion.HasQuestion()) {
-          throw 'No question! (I)' // eslint-disable-line
-        }
-        if (!currQuestion.HasAnswer()) {
-          throw 'No asnwer! (I)' // eslint-disable-line
-        }
-        // dont allow overwriting
-        // ?!>>>
-        if (!currQuestion.HasImage()) {
-          try {
-            currQuestion.I = JSON.parse(currData)
-          } catch (e) {
-            currQuestion.I = currData.split(',')
-          }
-        }
-        ExpectedIdentifier = ['?', '+']
-        continue
-      }
-    }
-
-    return {
-      result: r,
-      logs: logs
-    }
-  }
-
   function Load (cwith) {
-    var useNetDB = getVal('useNetDB')
     let skipLoad = getVal('skipLoad')
 
     if (skipLoad) {
@@ -1076,7 +1034,7 @@
       return -1
     }
 
-    if (useNetDB !== undefined && useNetDB === 1) { return ReadNetDB(cwith, useNetDB) } else { return ReadFile(cwith) }
+    ReadNetDB(cwith)
   }
 
   function LoadMOTD (resource) {
@@ -1109,16 +1067,12 @@
         d = JSON.parse(resource)
       } catch (e) {
         Log('Old data, trying with old methods....')
-        try {
-          d = ParseRawData(resource).result
-        } catch (e2) {
-          Log('Couldt parse data!')
-          ShowMessage({
-            m: 'Nem sikerült betölteni az adatokat! Ellenőriz a megadott fájlt, vagy az internetelérésed!',
-            isSimple: true
-          })
-          return
-        }
+        Log('Couldt parse data!')
+        Log(e)
+        ShowMessage({
+          m: 'Nem sikerült betölteni az adatokat! Kattints a manualért',
+          isSimple: true
+        }, undefined, ShowHelp)
       }
       var r = new QuestionDB()
       var rt = []
@@ -1268,7 +1222,7 @@
       if (r !== undefined) { answers.push(r) }
       HighLightAnswer(result, j) // highlights the answer for the current result
     }
-    ShowAnswers(answers)
+    ShowAnswers(answers, q.q)
   }
 
   function PrepareAnswers (result, j) {
@@ -1294,7 +1248,7 @@
     }
   }
 
-  function ShowAnswers (answers) {
+  function ShowAnswers (answers, question) {
     assert(answers)
 
     if (answers.length > 0) { // if there are more than 0 answer
@@ -1304,8 +1258,9 @@
         m: 'Nincs találat :( Kattints az üzenetre az összes kérdés/válaszért manuális kereséshez! Előfordulhat, hogy a tárgyat nem válsztottad ki a menüben.',
         isSimple: true
       }, undefined, function () {
-        openInTab(serverAdress + 'lred', {
-          active: true
+        OpenErrorPage({
+          message: 'No result found',
+          stack: JSON.stringify(question)
         })
       })
     }
@@ -1326,10 +1281,7 @@
     if (addedQ > 0) {
       msg = 'Klikk ide a nyers adatokhoz. ' + addedQ + ' új kérdés!'
 
-      var useNetDB = getVal('useNetDB')
-      if (useNetDB !== undefined && useNetDB === 1) {
-        if (!sendSuccess) { msg += ' Nem sikerült kérdéseket elküldeni szervernek. Ha gondolod utánanézhetsz.' } else { msg += 'Az új kérdések elküldve.' }
-      } else { msg += 'Ne felejtsd el bemásolni a fő txt-be!' }
+      if (!sendSuccess) { msg += ' Nem sikerült kérdéseket elküldeni szervernek. Ha gondolod utánanézhetsz.' } else { msg += 'Az új kérdések elküldve.' }
     } else {
       msg = 'A kérdőívben nincsen új kérdés. Ha mégis le akarod menteni klikk ide.'
       if (!data) { msg += ' Lehet azért, mert nincs kérdés betöltve.' }
@@ -1342,13 +1294,10 @@
       var towrite = '<h3>' + sentData.subj + '<br>TXT-ben nem szereplő kérdések: ' + addedQ + '/' + allQ + '</h3><br>' + output.replace(/\n/g, '<br>') + '<br><h3>Összes kérdés/válasz:</h3>' + allOutput.replace(
         /\n/g, '<br>')
 
-      var useNetDB = getVal('useNetDB')
-      if (useNetDB !== undefined && useNetDB === 1) {
-        try {
-          towrite += '</p>Elküldött adatok:</p> ' + JSON.stringify(sentData)
-        } catch (e) {
-          towrite += '</p>Elküldött adatok:</p> ' + sentData
-        }
+      try {
+        towrite += '</p>Elküldött adatok:</p> ' + JSON.stringify(sentData)
+      } catch (e) {
+        towrite += '</p>Elküldött adatok:</p> ' + sentData
       }
       document.write(towrite)
       document.close()
@@ -1393,10 +1342,7 @@
   function SaveQuiz (quiz, questionData) {
     try {
       if (quiz.length === 0) {
-        throw { // eslint-disable-line
-          message: 'quiz length is zero!',
-          stack: 'no stack.'
-        }
+        throw new Error('quiz length is zero!')
       }
       var output = '' // thefinal output
       var allOutput = '' // thefinal output with all questions
@@ -1428,14 +1374,11 @@
           sentData.subj = 'NOSUBJ'
           Log('unable to get subject name :c')
         }
-        var useNetDB = getVal('useNetDB')
-        if (useNetDB !== undefined && useNetDB === 1) {
-          sentData.allData = quiz
-          sentData.data = newQuestions
-          sentData.version = info().script.version
-          SendXHRMessage('datatoadd=' + JSON.stringify(sentData))
-          sendSuccess = true
-        }
+        sentData.allData = quiz
+        sentData.data = newQuestions
+        sentData.version = info().script.version
+        SendXHRMessage('datatoadd=' + JSON.stringify(sentData))
+        sendSuccess = true
       } catch (e) {
         Exception(e, 'error at sending data to server.')
       }
@@ -1471,9 +1414,6 @@
         var img = GetImageFormResult(i)
         question.i = img
 
-        if (q !== undefined) { q = SUtils.ReplaceCharsWithSpace(q, '\n') }
-        if (a !== undefined) { a = SUtils.ReplaceCharsWithSpace(a, '\n') }
-
         if (question.a !== undefined) {
           quiz.push(new Question(question.q, question.a, question.i)) // adding current question to quiz
         } else {
@@ -2107,46 +2047,6 @@
 
       CreateNodeWithText(questionTickboxCell, 'Kérdések mutatása válaszhoz', 'span')
 
-      // database mode listbox -----------------------------------------------------------------------------------------------------------------------------
-      var databasemodeListboxRow = tbl.insertRow()
-      var databasemodeListboxCell = databasemodeListboxRow.insertCell()
-
-      var databasemodeListbox = document.createElement('select')
-      databasemodeListbox.type = 'checkbox'
-      // databasemodeListbox.checked = getVal("showSplash") || false;
-      databasemodeListbox.style.position = ''
-      // databasemodeListbox.style.background = "white";
-      databasemodeListbox.style.left = 10 + 'px'
-      databasemodeListbox.style.margin = '5px 5px 5px 5px' // fancy margin
-      databasemodeListbox.style.top = menuDiv.offsetHeight + 'px'
-
-      var databasemodeListboxText = CreateNodeWithText(questionTickboxCell,
-        'Kérdések beszerzése:', 'span')
-      databasemodeListboxCell.appendChild(databasemodeListboxText)
-
-      databasemodeListboxCell.appendChild(databasemodeListbox) // adding to main div
-
-      databasemodeListbox.addEventListener('change', function (e) {
-        // sorry for using selectedindex :c
-        setVal('useNetDB', databasemodeListbox.selectedIndex)
-      })
-
-      var uselocal = document.createElement('option')
-      uselocal.text = 'Helyi fájlból (old school)'
-      uselocal.value = 2
-      databasemodeListbox.add(uselocal, 0)
-
-      var usenetsafe = document.createElement('option')
-      usenetsafe.text = 'Netről'
-      usenetsafe.value = 0
-      databasemodeListbox.add(usenetsafe, 1)
-
-      var selected = getVal('useNetDB')
-      if (selected !== undefined) { databasemodeListbox.selectedIndex = selected }
-
-      var databasemodeListboxElement = document.createElement('span') // new paragraph
-      databasemodeListboxCell.appendChild(databasemodeListboxElement)
-
       // setting up buttons
       var buttonRow = tbl.insertRow()
       var buttonCell = buttonRow.insertCell()
@@ -2241,6 +2141,28 @@
     if (!val) { throw new Error('Assertion failed') }
   }
 
+  function OpenErrorPage (e) {
+    let path = 'lred'
+    try {
+      if (e.message || e.stack) {
+        path += '?'
+      }
+      if (e.message) {
+        path += 'msg:' + SUtils.SimplifyQuery(e.message)
+      }
+      if (e.stack) {
+        path += '___stack:' + SUtils.SimplifyStack(e.stack)
+      }
+      path = SUtils.RemoveSpecialChars(path)
+    } catch (e) {
+      Exception(e, 'error at setting error stack/msg link')
+    }
+    path = path.replace(/ /g, '_')
+    openInTab(serverAdress + path, {
+      active: true
+    })
+  }
+
   // : }}}
 
   // : Help {{{