Camera/Video black screen

[JDub0820]

The wierdest thing has been happening to my camera app on my Touch pro. When I try to take a picture or a video the screen is totally black, I try to click on the screen and I don't see anything happen as far as the menu that is supposed to pop up. The phone is not frozen or anything because I can hit the end button and it will go back to the Touchflo screen. Not only that but if I click the shutter button it does take a picture and the picture comes out fine, the problem is I just can't see what I am taking. I have tried removing other applications to find the problem but can't, it will start working normal again and I think I found the problem then all of the sudden it will be black again. Sprint won't do anything for me because they say that the conflict is from a third party app that I have intsalled which may be true but if anyone has any advice on how I can find the conflict I would appreciate it.