Hi, I have been trying to put an old Mac Pro to work mining XMR. This MP cannot run any OS over 10.7.5, but has a fairly capable CPU. Unfortunately, the last release of MacMiner (1.5.70) does not seem to be compatible with the OS (the process is killed when starting the app), while the previous version on the downloads page (1.5.40), while it does start on my system, does not support XMR mining. All other command line miners I tried (different xmd-stak versions, XMRig), don't seem to work with 10.7.5 either. Is there a way to try an interim version of MacMiner? Any other advice would also be appreciated!