I’ve been seeing the same error since moving back to Ubuntu Server 14.04 LTS from 14.10 a few weekends ago.
I found this thread yesterday and have upgraded mono and mediainfo to the latest from their PPAs instead of the ubuntu PPAs and since haven’t seen this error since. I previously couldn’t keep sonarr running for more than 15 min.
Previous (failing) Mono version:
mono --version
Mono JIT compiler version 3.10.0 (tarball Wed Nov 5 12:50:04 UTC 2014)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
TLS: __thread
SIGSEGV: altstack
Notifications: epoll
Architecture: amd64
Disabled: none
Misc: softdebug
LLVM: supported, not enabled.
GC: sgen
Previous (failing) MediaInfo version:
mediainfo --version
MediaInfo Command line,
MediaInfoLib - v0.7.67
Current (working) Mono version:
mono --version
Mono JIT compiler version 3.12.1 (tarball Fri Mar 6 19:12:47 UTC 2015)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
TLS: __thread
SIGSEGV: altstack
Notifications: epoll
Architecture: amd64
Disabled: none
Misc: softdebug
LLVM: supported, not enabled.
GC: sgen
Current (working) MediaInfo version:
mediainfo --version
MediaInfo Command line,
MediaInfoLib - v0.7.72