I have a Mac with Firefox installed, but now a pop-up says that I cant close it because Adobe Photoshop Elements Editor is busy.
It has been that alle night long...
I cant open Editor either, but have no problem with Organizer.
I have used it a few times before without problems.
What can I do ?
Rebooting is a good start.
Unfortunately, though Macs usually run more predictably than PCs, they can also be much more challenge to diagnose and fix when they do go wrong.
I've not seen or experienced what you're describing in either version 9 or 10 on a my Mac running OSX Lion.