Hello. I was playing around with the Drum Kit Designer Kits and thought I'd try to load one of them into Ultrabeat. So I saved the Four On The Floor to a folder in the EXS24. Then , via the Finder ...I dropped it into the Ultrabeat Assignment section ( where the sounds are on the left ) expecting it all to populate. But Logic crashed. I tested it with other Software Instruments and all was fine. I had just wanted to experiment with the Drum Designer Kits and the Step Sequencer and Ultrabeat's internal automation/extra sound design features. Am I doing something wrong or are the Designer Kits just too potent for Ultrabeat ? Thanks for any suggestions. I use a Mac Pro Quad with 12GB running Mountain Lion. I haven't had any other major issues at all with Logic X and do love it !