Using v1.0.7a, I logged out due to getting severe lag spikes and my server crashed with the following error right after I logged out:
http://pastebin.com/RJQeR6vK

Now, I get this error after rebooting the server and trying to log in:
http://pastebin.com/fFYMDSCS

Let me know if you need any more information.

Fixed in this commit: a0de6a9
1.0.7b will have the fix.
You probably have lost all your settings on filtering/sorting tiles. I'm very sorry about this :(

Gonna look into this now, I have the feeling I derped really bad :S

Not a problem. Only just started setting things up. =)