whit83,
It may be helpful to post the crash report. However, I am not proficient at reading crash reports, perhaps someone else may be able to glean some information to help you. I recommend that you start your own thread in this forum to get some individual attention.
1. If you are using any sync services...turn them off, and test iCal.
2. Complete a Safe Boot, followed by a normal startup. Then re-check iCal.
3. Check for Duplicate Fonts, and Resolve Duplicates. Then re-check iCal.
4. Check iCal performance in another use account. If it works in another user account then go to the next step.
5. Attempt to backup your calendars, and follow the steps listed in How do I clear the iCal or Calendar cache in OS X? - Community Contributions - Hermes.
Good Luck.