http://www.freewebs.com/masterpikachu/ZC%20Content/Incomplete%20Quests/LOZ-Generation4.qst
Every time I shoot wand magic into a 3 or 4 way prism that is walkable, ZC instantly crashes. The version of my test quest that I posted here has the walkable prisms. I decided not to upload an update since on my computer, I made all mirrors and prisms fully walkable until further notice. Plus, I didn't even have to go to the menu screen to get this critical bug. In addition, it happens if the wand sprite appears on a fully solid 3 or 4-way prism combo when the magic is fired.
AND NO, THIS IS NOT THE SAME AS THE PRISM/BLOCK INTERACTION BUG.