Bridge CEPHtmlEngine hangs up c/o custom metadata panel extension

I’ve installed the custom metadata panel extension for Bridge and when I press the Settings button in that panel I'm given two choices one of which is the “Open View Editor” and below it I select default and then a new window opens with a spinning circle and just gets stuck permanently. I later got a system message that this process is stuck…

High CPU usage due to CEPHtmlEngine 

Thanks in advance for any help.

Paul

attached bridge log  activity monitor log