Am on joomla 2.5.24 in IE 11. I can't load editor http://screencast.com/t/We56nADYDwnP It works in backend. Using 2.4.2 of JCE.
It seems that module parameters haven't been configured properly. Please make sure that you are using a valid twitter username, and
that you have inserted the correct keys. Detailed instructions are written in the module settings page.