Marketplace project Build/Cook fails with lots of these errors: (filename not found) [in C:\WINDOWS\system32\KERNELBASE.dll]

Hi everyone,

When I try to package or cook a marketplace project (Landscape Mountains with small blueprint modifications, ie tweaked speed values etc) I get the error in the title with about 15 different things that are apparently ‘missing.’ I can open the file paths in windows explorer and see all of the files it says are missing, but it can’t find them for whatever reason.

At the bottom is a small example and the full log is attached.

I’ve also tried to disable most plugins, it seems there was one (filename not found) error resolved by disabling the Paper2D plugin as other people have reported success with that one, but as you will see about 15 more still remain.

Specs are Windows 8.1 64 bit, 8GB ram, i5 4570 3.2ghz, gtx670 2gb, 2x SSDs as storage (if that matters) 1 main C drive, and one for data (not in raid)

Attached is the full log, please have a look and let me know what you think. The errors happen at the bottom of the log file, at the “begin: stack for UAT” section. Small snippit below:


MainFrameActions: Packaging (Windows (64-bit)): UE4Editor-Cmd: begin: stack for UAT

MainFrameActions: Packaging (Windows (64-bit)): UE4Editor-Cmd: Address = 0x81895bf8 (filename not found) [in C:\WINDOWS\system32\KERNELBASE.dll]

Hi Desinc,

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, but different issue at this time, could you please submit a new report for it.