[Cura stuck on splash screen - log included]

I had the same problem. (possible cause: using AVG TuneUp registry clean-up).

Uninstalling Cura and Minecraft didn't help.

I found that it helps to make the following change to Cura\util\pymclevel\materials.py

From:

 

    def addYamlBlocksFromFile(self, filename):       if  yaml is None:           return

 

To:

 

    def addYamlBlocksFromFile(self, filename):       if True:           return