From the research I’ve done so far, most users run into Exitcode 3 when dealing with individual assets that are of a significant file size, the only large assets I have are materials, usually pushing around 35MB each.
Other potential problems seemed to be the disabling of the Steam VR plugin, so I re-enabled that plugin, as well as the OculusVR plugin, just to be safe. No luck, each time I run into the same Exitcode 3, followed by Exitcode 25.
I’ve also been very explicit in keeping filepath lengths down to around 220 or lower.
I researched specifically to find the Line 739 error, and the only result I came up with was a pastebin link from someone else, with no discussion of the error.
I’ve attached the Full Cook Report here, and a few quick lines that I thought relevant below.
UATHelper: Packaging (Windows (64-bit)): LogWindows: Error: Assertion failed: NULL != GeneratedClass [File:D:\Build++UE4+Release-4.18+Compile\Sync\Engine\Source\Runtime\Engine\Private\Blueprint.cpp] [Line: 739]
UATHelper: Packaging (Windows (64-bit)): Took 59.3574986s to run UE4Editor-Cmd.exe, ExitCode=3
I’m not sure what other information to provide at this moment, this is really all I could find.