Recently, we’ve been getting a few complaints from users, complaining that Name Mangler won’t accept dragged and dropped files.
We were trying to figure out what was going on, given we haven’t changed those apps. It seems the answer is a bug in Apple Events (which handle inter-application communication) that was introduced in 10.8.2. This blog entry explains the problem relative to “Open in Finder” no longer working.
Most importantly, that blog entry also contains a number of fixes. The least painful, though most geeky, is to open Terminal (in Applications > Utilities), paste this command, and then press Return:
sudo killall -KILL appleeventsd
When prompted, enter your admin password and press Return again, and you’re done.
This command forces the Apple Events engine to relaunch; once that happens, the issues you’re experiencing will go away, at least for a while.
Hopefully Apple will fix this in 10.8.3, as it has the ability to interfere with any program that communicates with another application.