Gnuite, got another bug report for ya.

POI Bug #2:
I have multiple POIs on the maps. I click on one of the POIs to View/Edit and change the category. I click on a 2nd POI to do the same thing and click Save. Each time I repeat the steps above, MM crashes on the 2nd attempt to change a POI's category.

Edit: I had custom category images installed hence why I was updating my POIs. That might have or been part of the problem.