I'm suddenly having a recurring issue with JRiver "hanging up". It has happened once or twice a day for several days. Whether I am playing back an album or shuffle on from a Smart List after playing for some time JRiver will just stop playing in the middle of a song as if paused. If I take any action to hit Stop, Play, Refresh etc the little spinning beach ball will appear and I cannot take any other action than to Force Quit JRiver. Once I relaunch everything seems fine and I can resume playback. I'm on the latest version of JRiver and Yosemite. It has seemed to appear as a problem out of the blue. I haven't made any recent changes to my system.
HI Mike - I have been getting this recently as well, though for me it seems to hang up if any system alert goes off, like a software update or a push notification. Usually about once per week for the past four weeks. This machine is on Mavericks, but can be upgraded to Yosemite if you feel that is an issue. I don't think it is relevant, as I see the same behavior on the upstairs machine which is running Yosemite.
I turned MC Logging on Monday Evening, and after restarting MC from a crash this morning, it reported that logging was turned off and I could not find a crash file. Therefore, I am attaching the native crash results from MacOS to this message. Jim/Matt, if it is in the wrong place, please feel free to move it.
Note, whatever is happening causes MC to go into a hang, which is probably preventing you from writing the log file... just a cursory glance from me this morning, it looks a little like a semaphore hang. Perhaps from a database update of some kind?