Q: Import Folders As Projects Broke?

Are you saying you don;t even get the first tear window that lets you select the folder or is that once you select and press import nothing happens?

I fit is the first case (not tear screen) then try moving the preference file out to the desktop. See Aperture 3: Troubleshooting Basics about 2/3 of the way down for instructions for moving the preference file.

If the problem is nothing happens after you press import post back.

Ok so did you read my post and try the suggestions?

I have exactly the same problem here (Mac Book Pro early 2011, Mac OS X 10.8.3, latest Aperture 3.4.4). The trouble started after the latest upgrade.

I repaired the library, corrected permissions and removed ~/Library/Preferences. That didn't change anything.

After choosing File>Import>folder as projects nothing happens. There is no window, popup etc. Sometimes Aperture even runs into a "blue screen".

Any suggestions to solve this problem?

looks as this problem is quite common https://discussions.apple.com/thread/4045655?start=0&tstart=0.

OK, removing ~/Library/Preferences/com.apple.Aperture.plist and rebooting did it for me