That's fairly likely to be bugged and such (they are non-ignition), I'd recommend finding your login credentials if you got it from Garagegames (No installer in download, just the game, as normal), or from whatever site you got it. Can you not redownload it from the MGS?
You screwed up your MBG. How? Is the screen white or something? Drag out the MarbleBlast folder in the Library to the desktop, and reopen it. Files in the Marbleblast folder override files in the game, so check that first. (It stores your times, though). You didn't screw it up with those fonts, did you?
If you really want to reset (I wouldn't, but it's your preference!), then remove the MarbleBlast folder, remove your MBG copy (or just don't use it), and then restore your MarbleBlast Gold app and your old MarbleBlast folder, if you have one. (Else, it will recreate with default settings.). That is how you reset. Oh, and if it's not initialized, you may have to enter your code again.
Also I do believe you can't mention those at all, T2R. I'd edit that out. I believe a staff member might be able to resupply you with a copy.
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