Quick question for both of you: are you able to play the tutorial levels?
Also, if you have a moment, can you open up the "output_log.txt" file for the game, and let me know what you see there at the bottom after attempting to play a level and then quitting the game? The file should be located at:
C:\Users\[your windows username]\AppData\LocalLow\Walaber\ProGymnast\