Ugm, stuck in a loop

[dgdimick]

Hit some stupid option while trying to set up Authenticater, and now when I try ti use any application that needs a shell, it pops up a window that shows a file folder and "part 1" next to it, with "OK' below it.

It's stuck in a pop-up cycle, and the only way to make it go away is to power off the phone.

a duckduckgo search didn't return a solution

Thanks,
Denis