Stunt software error And i am running the version 10.7.3.

Hi,
I am a user of stunt software and i am running the version 10.7.3. When I start the software for time tracking the timers stop at random. To overcome this issue I shut down my application and
then reopen it but each time I open my application i get an error window and it starts all over again.
The error message is:

