Crash after rss sync

Hi,

Sonarr seems to be crashing after rss syncs

15-4-20 11:25:40.4|Info|DownloadDecisionMaker|Processing 40 reports
15-4-20 11:26:21.7|Info|Nzbget|Adding report [Silicon.Valley.S02E02.INTERNAL.720p.HDTV.x264-BATV-NZBgeek] to the queue.
15-4-20 11:26:21.8|Info|DownloadService|Report sent to download client. Silicon.Valley.S02E02.INTERNAL.720p.HDTV.x264-BATV-NZBgeek
15-4-20 11:34:49.4|Info|RssSyncService|Starting RSS Sync
15-4-20 11:35:48.9|Info|DownloadDecisionMaker|Processing 997 reports
15-4-20 11:35:52.0|Fatal|GlobalExceptionHandlers|EPIC FAIL: Object reference not set to an instance of an object

System.NullReferenceException: Object reference not set to an instance of an object
at System.Threading.Timer+Scheduler.SchedulerThread () [0x00000] in :0
at System.Threading.Thread.StartInternal () [0x00000] in :0

It happens only some times.
It started happening from yesterday

Thanks,

Sounds like this stickied issue: Native mono crashes [kernel fix released]

Maybe its related, but my crash happens only after processing a rss sync

http://pastebin.com/CcsNFLcb

UPDATE: Started Sonarr again and it didnt crash this time

http://pastebin.com/f6cMziMN