Program not starting

[fireshaper]

Yesterday I pulled my Alltel Vogue out to take a picture and an error popped up saying that there was not enough memory to run the camera app, so I closed a few running programs but I was on the move so I missed my shot. Well last night I was going to do some reading on my phone and started up MobiReader but the program wouldn't start, it looked like it would and the Title Bar changed to display MobiReader instead of Start, but they it went right back to the Today screen like it hadn't even happened. I did a soft reset and tried it, still no dice, pulled out the battery with no luck, and even uninstalled and reinstalled MobiReader but still cannot get it to work.

Any idea what could be going on? I have been thinking of loading a 6.1 ROM and now I'm seriously considering it just to see if something got screwed up in the OS.