Yesterday I installed the latest OS x security patches from Apple for 10.10.2. This morning I noticed Sonarr wasn’t running and would not start. I tried restoring a backup but did not have success. As a last resort I downloaded the latest version of Sonarr for OS X and moved it into my applications folder. When I tried to start it OS X complained it wasn’t trusted and refused to start. Once I enabled it Sonarr ran just fine. I suspect the security update changes your security settings. Check it if you are having issues.
Mine works fine now. I’m just leaving this for anyone that has the same issue and is looking for ideas.