Check Workbench for a full log. For information on viewing the log in Workbench, navigate to https://devstar.rockstargames.com/wiki/index.php/Automation_Monitor

The build machine takes the independent data you have checked in and converts them to ps3, 360 etc. As artists check files in, this is automatically done in the background. When you export locally this is done on your own machine. Occasionally different errors occur on the build machine and this may be one of them.