I have been using this program (mostly happily)

since early 2009. The Data Export stopped working for me a few months ago. When I upgraded to version 1.7, thought I would try it again, and it still doesn't work. Here's what happens:
Click on 'Start' in the Data Export screen, and after a short delay (25 seconds) the app quits, and I am back at the Home screen of the iPhone.
I have used the new 'backup and restore' function to backup my data, but am unable to see what is there without restoring. A little unnerving.
I am assuming that uninstalling the app and then reinstalling might solve the program malfunction, but I am reluctant to do that without a clear idea of my data getting back on my phone successfully.
Any other ideas?
Ron