Can't find brush for: cp
Clicking "Ok" just made another one pop up again. If I clicked Chrome's checkbox that said "disable this page from creating more alerts" (can't remember the exact wording of that checkbox), it stopped and I was able to edit normally. It happened twice, and I don't really want to find out if it will happen a third time unless someone wants me to.
Using Chrome 23.0.1271.101 on OS X 10.8.2