I wish I could be more helpful, but I know next to nothing about Macs. In PC world a ‘reboot’ after installing things sometimes sorts a lot of issues…not sure if that’s helpful at all in Mac World though.
This should be working for you, there’s something we’re missing is all. Could be something on the Logic end. Could be something on the GA end. Hang in there.
I’ll do some searching and see if I can turn up anything that looks helpful. Meanwhile, go ahead and do a support ticket through your Stienberg Account.
As for exporting the samples. Some you can, but not the Simon Phillips Jazz kit ones. At least not directly. They’re stashed away in locked layers of VSTsound files.
Some kits that come with GA have unlocked samples that can be exported directly, while others do not.
You CAN resample though. It’d be a drawn out laborious process without a DAW that supports instant render though. In Cubase you could resample a kit in just a few minutes (make a MIDI track real quickly that plays all the kit pieces at different velocities, play/record with the DAW, then slice and dice the track, export the samples, etc…but it’s kind of pointless…if it were working well enough to ‘efficiently’ resample the kits, then we wouldn’t be having this conversation.