I have the same issue, in both Firefox (3) and Opera (9.6) running under Ubuntu (latest). At the same time I also experienced another issue with my media upload/insert buttons disappearing (mentioned in another thread). No amount of rolling back versions helped with either problem.
wzeallor – If you’d let us know the file name in which you made that substitution, I’d love to try it out. (and would be immensely grateful!)
It took me a little while to realize I was having the same problems. I tried rolling back to 1.5.8, and that DID restore my media buttons (if I recall correctly) but I still had other crippling issues. (That “you must enable javascript” error.)
Seems like a compatibility issue. 🙁
