Same "editor loading" problem, different error reported in DNN 7.3.2, FireFox 35.0.
Line 5 of textselection plugin.js - SyntaxError: expected expression, got '<'
Line 227, col 241 of ckeditor.js - TypeError: l is null
Cannot replicate problem with Chrome 39.0.2171.99 m or 40.0.2214.91 m.
Line 5 of textselection plugin.js - SyntaxError: expected expression, got '<'
Line 227, col 241 of ckeditor.js - TypeError: l is null
Cannot replicate problem with Chrome 39.0.2171.99 m or 40.0.2214.91 m.