Unfortunately, Corel Ventura 10 is notorious for its instability. There are numerous instances when it unexpectedly crashes. Perhaps one of the most adequately accommodating actions that you might take would be to uninstall the program, then reinstall it, so as to restore its more straightforward functioning. If that does not work, you should consider simply disabling the auto-save feature, and instead, try to save your work manually as often as you deem necessary.