Trying to reinstall Workbench for my old Variax 300 but I keep getting the error "Workbench can't be installed on this disk. This software requires Mac OS X 10.5 or above." The download only lists Mac OSX through Mountain Lion, a few versions ago. I now have El Capitan, which is 10.11.5 - by my math well above 10.5. is this not going to be supported going forward?