Can't launch/build multiple projects

Hello. I’ve recently been unable to package a couple of projects that were working fine until recently. I cannot think of a change I made which may have caused this, and it’s a bit odd that it’s happening to multiple projects at once. Could someone have a look at the output log and see if there’s something obvious I’m missing?

http://www.scribd.com/doc/235697813/outputlog

Hello,

Thank you for your report. We were not able to investigate this on the engine version you reported, but there have been many version changes to UE4 since this question was first posted. With a new version of the Engine comes new fixes and it is possible that this issue has changed or may no longer occur. Due to timetable of when this issue was first posted, we are marking this post as resolved for tracking purposes. If you are still experiencing the issue you reported in the current engine version, then please respond to this message with additional information and we will investigate as soon as possible. If you are experiencing a similar error, that is not 100% related, could you please submit a new report for it.

Thanks!