Server Down

The server is currently down. I tried to log in this morning and it wouldn't allow me to connect. On further inspection I found that the byobu screen running the server had mysteriously disappeared, which would have taken the server processes with it (I checked, no java processes were running, the server was in fact dead). This appears to have caused some kind of corruption, either a worldfile or some plugin files. I've tried to restore the worldfiles but it has thus far not helped. The server WILL start up Vanilla but as soon as I add craftbukkit and our mods it tanks. I'll keep this updated as I try and fix the server.