Unreal freezing on loading some projects

Development Programming & Scripting
1

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A few of my projects are freezing Unreal on load. The project looks blank, I can’t click on anything, Task Manager shows UE4Editor as “not responding”. Other projects (seemingly at random) work fine. I’ll be opening them fine one day and then the next time they just won’t open. Any idea on how to troubleshoot this?

The only not-simple thing I’m using in some projects is the beta Image Plate plugin. But setting “Enabled”:false in the .uproject file for that doesn’t change anything.

Thanks in advance for any ideas!

Threadripper 3960X
2080 SUPER
Win 10 Pro
UE 4.26.2

2

Answering my own question here because I eventually figured it out and hopefully this will be helpful to someone else:

Something in the “Saved” folder was causing the problem. AFAIK those are non-essential files, so I just renamed the folder, and the project now opens.

3

A bit late but just for other people.

When every my Project has an issue like this I would first delete the:

  1. Binaries.
  2. Intermediate.
  3. Saved.

folders. Since these will be regenerated.

If that fails I would also remove the Config folder. (Make a backup first) UE4 will regenerate it with the default values.

If it is a c++ project You can also delete the .sln file and regenerate the solution file.

Most of the time this will fix the issues I have.