Excerpt from syslog on OSX running PMS:
11/26/16 10:04:01 AM [0x0-0xc00c].com.plexapp.plexmediaserver[124] GUI:
11/26/16 10:04:02 AM [0x0-0xc00c].com.plexapp.plexmediaserver[124] GUI: Media analysis on DCP_0127
11/26/16 10:04:02 AM [0x0-0xc00c].com.plexapp.plexmediaserver[124] GUI:
11/26/16 10:04:05 AM [0x0-0xc00c].com.plexapp.plexmediaserver[124] GUI: Media analysis on DCP_0128
11/26/16 10:04:05 AM [0x0-0xc00c].com.plexapp.plexmediaserver[124] GUI:
11/26/16 10:32:24 AM Plex Media Scanner[63434] Plex Media Scanner(63434,0x104d01000) malloc: *** error for object 0x105c08f30: double free
*** set a breakpoint in malloc_error_break to debug
11/26/16 10:32:26 AM ReportCrash[63454] Saved crash report for Plex Media Scanner[63434] version ??? (???) to /Users/nilsonj/Library/Logs/DiagnosticReports/Plex Media Scanner_2016-11-26-103226_tanuki.crash
Happy to supply crash log and/or possibly compromised images to devs (though the ones I looked at from the above excerpt looked fine). I just deleted all found "thumbs.db" files in the repository and am attempting to re-analyze by command line to eliminate them as a potential cause.