Weird errors

SpaceChicken

After i yesterday tried to change a song in the cc files (it didnt work) and then i put the original song back..well after that every time i press the windows key (which i always use to make a game go to the background) then i get an error and the game closes :( i play on PC and i have the steam version.

*Joystick*

if you play on steam, it happens really often. But idk why it happens tho