Thanks to baseboard for suggesting this tip!

I'm only posting this here in case you're like....a TOTAL newbie or just got off vacation on a tropical island where you had no computer access for a month :-) I think most people in the Mac community have heard of these problems with CarbonLib by now.

There are NUMEROUS issues reported with installing CarbonLib 1.3.1, from drag n drop to printing to After Effects problems, just to name a few. If you suddenly find that you can't Drag n Drop clippings or some other weird behavior like not printing with Epson printers, then check your version of CarbonLib. It's highly recommended to revert to version 1.2.5 until Apple can work out solutions and offer a new update.

For more information, see your favorite Mac news site.