Comon now, of course I have a solution.
Your questtools is not compiling.
Close DB
Goto demonbuddy/plugins folder and delete questtools.
Go here:
http://www.thebuddyforum.com/demonbuddy-forum/plugins/trinity/152028-ezupdater-plugin-updater.html
Download and follow the instructions (make sure to copy sharpsvn to your main DB folder as instructions say)
Run DB - Make sure ezupdater is enabled in your plugins tab in DB
It should say one or more updates were applied to restart DB
Restart DB
That will reinstall the latest questtools and trinity/etc..
Tell me if that fixes. If not reattach another log.