No problem, it happens to the best of us ^^.
I usually try to make a clean test before publishing. That means clearing all Payer Prefs with "PlayerPrefs.DeleteAll();" and also clearing all registry entries (RegEdit: HKEY_CURRENT_USER\Software\[yourcompanyname]\[yourgamename]). Once that's all deleted and it still works as expected you can be pretty sure it will work for others too.
Btw.: if you can find the time I would appreciate your feedback on my game (demo) here ;-)