Just downloaded LR5. Created a catalog on a flash drive (64GB). Started an import from a SD camera card to a folder on the flash drive. The import (of about 55 pictures) hangs up. Using an iMac running OS X v 10.9.5. Why does the import hang up?
Where is your image repository (on SSD as well)?
See: Re: LR5 hangs (beach ball) & iMac freezes while importing RAWs
Retrieving data ...