Hello,
For some reason the install is taking forever for me. I go to upload the XML as a new product, and it sits there forever. I don't get the little expanding dots while it's installing or the finish notification or anything. I've just now figured out that the longer I let it sit, the more plugins/hooks get installed, not sure about templates, but I'll let it sit for longer than 5 minutes before interrupting it this time and see if it ever actually finishes.
Just wanted to point this out and/or see if anyone else was having the problem. I had the system for 3.0.x installed before we upgraded to 3.5.0. Didn't think of removing the old DB entries before I installed the new warning system, so that could have been part of my problem. Not sure at this point...