--- Anyone ever seen this??? ---
I created an index with a pound sign as the first character, thinking to designate as a temporary index. I was only using this index for some perfomance testing. Anyway, when I was done with the index, I tried dropping it, using the index name. Didn't work. Said unrecognized object name... Tried putting square brackets around the name. Same thing... Tried double quotes. Same thing... I looked in Enterprise Manager, and sure enough, there was my new (now not so temporary) index tied to my table. Tried dropping it through Enterprise Manager. Same error in a dialog box. I even went to the system tables and found the object, but it refused to let me delete the index, even after updating options to allow editing systables...