There has been an error in the Pandora FMS Update Manager of the 6.0 version.If you have updated Pandora through the Update Manager between Monday 16th 2016 and Wednesday 18th at 12am CEST, you should continue reading.
If you tried last night to update the Open Source version of Pandora FMS via the update manager, an error was returned which was that a version 6.1 package was uploaded by accident. It's unstable and needs fixing. If you've been affected by this mistake, you should see "V 6.1 Dev" on your login screen. The fix can be performed by downloading and replacing the console with the 6.0 code SourceForge