Instructions
Open "StepMania." Freeplay mode opens on its own since the bug prevents you from going back to the main menu.
Press "F3" on your keyboard to return to "home play" mode.
Open "StepMania.ini" in the directory "C:\Program Files\Stepmania\Data" with a text editor such as Notepad if "F3" doesn't work.
Change "CoinMode=2" to "CoinMode=0," then save the file.