Here same, he's always running core & the one with the stairs.
The bad news: It seems to be some sort of complicated issue related to the RadsProfileManager plugin/DB.
Only a small minority of people experience it and we have no idea why. None of us have been able to reproduce it in ANY fashion.
POSSIBLE fixes, for some people:
1st: delete your compiled assemblies folder.
2nd: delete the settings for radsprofilemanager.
3rd: disable all other plugins besides RadsProfileManager (try it once without trinity)
Try doing that. If you're still looping,
4th: reinstall DB in a new folder. re-download plugins and try that.
If that doesnt work.. I don't know

The good news though: Rad is entirely re-writing the plugin, as well as adding more wonderful features. So hopefully THAT will fix it!