I've recently had to reinstall Maverics 10.9.5 on my iMac using Logic Pro 9.1.8. I use a Scarlett 6i6 audio interface, Trinity Plus and a Roland TD30 electronic drum kit. I'm not seeing the TD30 in my audio midi setup window of the iMac. I do, however, see the module in the arrange window, but it's grayed out. I can record in audio mode, of course, but that's all. When I start Logic, I get-"Instrument TD30 sends to a midi port named TD30 USB midi of midi interface TD30 USB midi which no longer exists" I've installed the correct driver for the TD30 and the software is up to date. The USB cable connecting the TD30 to the back of the computer is working fine (I've checked it on another Mac). How do I get the TD30 to show up in the audio midi setup window on my iMac, so that it's not grayed out in Logic? Also, why is this called TD30 USB midi, now? It wasn't called that before...? Is there a setting in the environment window that needs to be changed?