Lost KNIME Explorer when upgrading to 3.6

When I upgraded my existing environment (from the Dec 6th release - 3.5.3 + extensions) my KNIME Explorer started showing an exclamation point. I was able to go into the dialog and re-add my local environment to the explorer but not the examples server or our KNIME server. I installed a fresh copy of 3.6 and then was able to add those two back into the same workspace so I think that should be fine. I just thought I would mention it in case anyone else experiences that or to see if anyone had thoughts on how it was caused.

-Chance