I can reproduce it:
and i need no non existing drive.
simply open the programm, click on 'save file system...' and save your current settings to any file.
know, click on 'load file system...' and choos this saved file.
close the programm and open it again.
now, try to close it or try to click on the 'menu' button and you will get crazy error messages.
after this yout programm sttings are not reseted to default, they are reseted to NOTHING, you have to delete the registry value or the INI file to become back the normal settings.
hope you can fix this
