Upgrading to MakeMKV 1.10.10 took one of my drives out of the dropdown list. The drive is a Pioneer BDR-207D - shows up under OSX 10.13.2 Disk Burning and disks mount on the desktop:
PIONEER BD-RW BDR-207D:
Firmware Revision: 1.10
Interconnect: FireWire
Burn Support: Yes (Generic Drive Support)
Profile Path: None
Cache: 4000 KB
Reads DVD: Yes
CD-Write: -R, -RW
DVD-Write: -R, -R DL, -RW, +R, +R DL, +RW
BD-Write: -R, -RE
Write Strategies: CD-TAO, CD-SAO, CD-Raw, DVD-DAO
Media:
Type: BD-ROM
Blank: No
Erasable: No
Overwritable: No
Appendable: No
Reverting back to the previous release of MakeMKV puts the drive back into the MakeMKV DropDown List. Also I've noticed every run of MakeMKV (regardless of the drive selected) creates a"xxxx_save.tgz" file - even though I have not selected the BD+ option. I have two other drives, Pioneer BDR-208D and LG BE14NU40 - both work under the new version of MakeMKV.