I've been getting emails and reviews saying that Auto Respond Free is crashing. I have not seen this myself, but it sounds like it is an issue. I have no idea if Auto Respond Pro is affected, but if you experience a crash please hit the "report" button and put details in the report about what you were doing to cause the crash. The reports that I have received point to internal OS code, not code in my app, so that makes it difficult to pinpoint.
I am going to look into this tonight and see if I can figure out what's going on, but I can't do much until I get out of work. Please let me know any details that you may know about these crashes, it will help me troubleshoot.