OpenFire does not start anymore

I’ve installed openfire on a Gentoo system and got it working. But after I started loading and unloading plugins openfire started to use 100% CPU and I had to kill the process. Now i’m unable to restart it. There are no error messages in the logs (I checked /var/logs and /opt/openfire/logs).

I have stopped and restarted the service before without any trouble. I don’t know what to do next.

It seemed OpenFire didn’t have enough memory, I was running it inside a VPS and set it too low