Hi Matt Westlake,
Sorry to hear that you ran into troubles. How did you determine that "it caused a plugin to stop responding" - would be great to know what symptoms you saw Jenkins exhibiting at the time and what page you tried to access.
As for the server not starting up correctly, would you be able to:
- Restart your Jenkins server
- Wait for it to start up
- Visit the Jenkins home screen
- Copy the logs and email them to me email@example.com
That should help us diagnose what is going on here.