Sorry I think I am mixing some things up here, I am a bit confused because at times the engine rebuild seems pretty random to me. So here is exactly what happened:
-Built the project in Development Editor
-Started and cancelled packaging
-Changed to Development Game configuration
-Build project by clicking on “Local Windows Debugger” (which should as of my knowledge only build out of date projects)
Then the process as in my post above began, taking about 20-30 minutes.
After that I switched to Development Editor and compiled it without problems, then back to Development Game and had to do the same thing again. I am pretty sure that usually doesn’t happen when switching between these two modes.