"Memory could not be read" error in Corel Draw 10

I often get the following error message as I'm working in Corel Draw 10:

The instruction at "0x10a82bec" referenced memory at "0x00000070". The memory could not be "read".

This happens without warning and the only option I have is to terminate the program. Sometimes an auto back up is generated but most of the time I simply loose the unsaved data. Can anyone guide me to a solution? Thank you.

I'm running on Windows XP Home, if that matters.