Alright, so it seems like the problem's with my button (thanks for helping me get that far!), but I can't for the life of me figure out what! I used the same format as the "lsButton" from the non|step theme, since I think it does basically what I want my button to do, just with a different popup. Here's the code for my button:

*Label gameButton
;Label Main Settings
gameButtonAddToGroup "TaskBar"
gameButtonX "-235"
gameButtonY "-22"
gameButtonWidth "31"
gameButtonHeight "21"
gameButtonImage "gameButton.png"
gameButtonHoverImage "gameButton2.png"
;EventSettings
gameButtonOnLeftClickDown !PopupDynamicFolder:
"C:\LiteStep\personal\Games shortcuts" -355 -200