Help? My gallery app is not refreshing...

I'm trying to change my wallpaper but when I select a picture in the file manager I don't get any menus, the screen goes black for a few seconds and then the picture I opened is shown but no menus...

I've tried JPG, PNG

If I take a picture with my camera, the gallery does refresh... But I also tried putting the wallpaper in the DCIM folder where the camera pics are, but nothing happens... I can't seem to open a picture, go into the menu and click set as wallpaper. The only picture it's working on is the one I currently have as my wallpaper!

i got something like this once, it went away after i mounted the phone to the computer, it refreshed the gallery, and then it started working right again. have you tried restarting your phone, or taking the memory card out and back in again? when you do those things the gallery auto refreshes

Yeah I've tried all that, several times... I guess I screwed something up toying with the phone. It's my first Android device so naturally I have been tinkering with it a LOT in the two days I've had it, trying out TONS off applications and widgets and such. Something must have gotten messed up in the process. I'm doing a complete re-flash now.