[Zope] malformed Acess rule breaks zope

zopistas I was trying to rewrite the access rule, as per evan's suggestion. I was asking for a slice that wasn't there. Nothing would then come up: any page I tried to go to told me that I had an index error. it wouldn't acknowledge my change that should have fixed it. So i went in with __no_before_traverse__ which worked (whew). Then i tried to edit the method. No dice. Deleting it, however, did work. Just thought I'd mention it, I dunno why it wouldn't fix. ~ethan