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Packaging Error: unknown error

Hey guys, I've been working through some errors with my project, and now I've managed to eliminate every error with my packaging except for this: alt text

I can't for the life of me understand what this means, I tried searching anything to do with GeneratedClass/ClassDefaultObject, but nothing is giving me any answers, and I don't have any blueprints with those names either.

I also get this string of errors when launching the game as well, even without packaging. It may not have anything to do with this, but I don't know what else to look for in the output log, which I have attached here. Any help would be appreciated, thanks in advance!

Edit: someone mentioned to install visual studio and generate the VS files associated with my project, I have packaged my project numerous times before, and have had no issues with packaging in the past.

Product Version: UE 4.18
capture.png (186.8 kB)
uat-log.txt (744.9 kB)
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asked Jul 07 '18 at 08:09 PM in Packaging & Deployment

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avatar image TheCuddlyRoman Jul 15 '18 at 12:00 AM

This issue is still persisting. I've attempted to update to 4.19, reset configs to default, and reload every single blueprint in my project, but to no avail.

alt text


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2 answers: sort voted first

This question is solved over here, and the solution is very stupid. If you're from the future, and are finding this looking for answers, I wish you good luck. I solved my problem by migrating my project over to another empty project, then systematically deleting every asset in my project (while replacing with dummy assets so as to not create more errors) until I saw that the project packaged properly.

here's the link again, if you want it:


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answered Jul 17 '18 at 07:50 PM

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Install Visual Studio and the packages for ue4 in the Visual Installer selection then go to the options of ue4 in Epic games and check all the options and press ok

after all installed go to the folder of your project: Documents> Unreal projects> select the icon in blue my project with the right mouse button and click> generate visual studio files it will open and automatically check after this select in the right menu of the screen where it is at the top written My project and click recompile all

after finished save everything and close. In the packaging options, deselect the generate debug files option and try to package again.

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answered Jul 07 '18 at 08:22 PM

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avatar image TheCuddlyRoman Jul 08 '18 at 01:42 AM

I should've mentioned this, but I've Packaged my project successfully before with no issues. I have the recommended version of Visual Studio, and I already have the visual studio files associated with my project.

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