I have the same problem with GPE-Calendar on my 770 as someone else raised in the forum.

"if I set a calendar event, and I want to be warned when it is about to happen, I set an alarm, let's say it will be triggered 5 minutes before 12.30.

As soon as the clock switches from 12.24 to 12.25, GPE Calendar will crash. Launch it again and it'll crash again. Launch it a second time and it'll work. That's all."

Anyone knows how to fix it? Thanks!