I use the TWC RoadRun 'webmail' app and have no basic problems, but I can not use the included Rich Text Editor. Apparently I am missing a plugin. What plugin?? Please help.
I believe its some type of java plugin. Maybe try updating your browser to the latest version? If you have a different browser try that browser to see if you get the same result.
Also maybe try downloading the Google Chrome browser.
What Operating system and browser are you using?
I have the same problem.
Without Rich Text Editor I can't use roadrunner mail; no control of fonts, etc.
I looked into Java, but found that it is not secure.
My Firefox browser is up to date.
I am having the same issue on even on different computers. Using the latest updated Firefox ver 50. I tried contacting the Spectrum Chat service and they tell me the email tech team is working on on it but no one has told me what is causing the problem. The error message should, at least show what plugin is missing so I know what I need to find instead of leaving me guessing.