Packaged Unreal projects will not open on my PC

No as stated in my first commend, there are no error messages. I am able to launch the project in the editor and play the game in the editor and the standalone version. But it crashes when I open the packaged version.
I don’t know what populate means.
It never shows up in the task manager but it somehow crashes the whole explorer. I have to restart the explorer when I try to open it. My method of packaging is simply clicking package and choosing windows 64bit. I can attach you a screenshot of my packaging preferences. But I never changed anything here since it stopped working:

There are a huge bunch of in that Folder, also some other folders with strange numbers. I can send you the latest one. Please tell me if you need additional ones. [link text][2]

Would be happy for any help, thanks!