Can't Package my project (Error_UnknownCookFailure)

Based on the amount of 3rd party plugins that you’re using in your project and the fact that this has been unable to be reproduced in a clean project, it leads me to believe that there is an issue with your setup as it relates to one of the plugins that you are using. If you are able to reproduce the error in a clean project with no plugins, then I’ll be glad to continue investigating. In the meantime, I recommend migrating the content into a clean project that has no plugins enabled and attempting to work in that project.

The project is also crashing on launch for me, which is a separate issue. What you can do is open up a new post in the Bug Reports section regarding the crash you’re seeing. Provide as much information as possible, including the logs from your project’s Saved->Logs folder, as well as the Machine ID from the crash reporter window (also ensure that you hit Send & Close on the report).

I use 4 plugins in my project: Substance, FixIt, Low Entry Extended Standard Library and Victor.
Victory is an unofficial plugin that I had to manually install on the 4.12 version on the engine itself. This is more than probably the reason you can’t launch the project.
[Victory Plugin] (VictoryPlugin16)
In the meantime I’ll try migrating the content into a clean project that has no plugins enabled as you advised.

Let me know the results once you are able to migrate the content over.

As far as the plugins go, if it turns out to be an issue related to one of the plugins, you’ll need to get in touch with the creator of that particular plugin to report the issue so that they can work on resolving it.

Hello,
I tried creating custom BPs for the GameMode etc in a clean porject with all plugins enabled and it has no error in the log.
I assume the errors of the real project are due to a node used in one of the BPs related to GameMode. I’ll try to find what exact node causes the error to pop up.

If you’re able to discover the issue, definitely keep me updated.

Thanks

I actually found that when i open most of the blueprints of my project the “ensure 1045” error appears.
Could this be an 4.12 engine bug?
I cannot find a way to get rid of that error.

Since you’re unable to reproduce the issue in a clean project, I have to imagine that it is related to one of the plugins that you are using. If you are able to recreate the setup in a clean project and experience that error, please let me know. Otherwise, unfortunately, we have limited options as far as investigation because there isn’t much information available.

Hello,
Sorry for the lack of update on this post. We’ve been very busy enhancing everything in the game, waiting for a friend of mine to help us find out what caused the “ensure fail” error. We started debugging a week ago and we discovered that the error is actually caused by the same mistake as for the other guys that had this “ensure fail” error.

The solution was so obvious that I didn’t even think about it.
The packaged game works perfectly.
Thanks for your time an help.
By the way, would it be possible to make it so Unreal hints the fact that this “ensure fail” error is most likely caused by a diamond shaped output connected into a diamond shaped input? I have the feeling it would help alot of people as it seems I was not the first one to get this error.

Glad I found this, thanks alot!