Software Instruments

I use presonus Studio One mainly, but just having tried garageband I have the following issues. Software instruments and Audiounit plugins I have are showing twice in the EDIT tab, and also not all Audiounits are showing. The list goes to M, ie A-M, No N or O starting plugins. Looks like it just cuts out. Ive deleted the cache and forced a rescan. Any solutions to this or is it a known bug.