User blog comment:Ducksoup/Visual Editor Gets an Update/@comment-452-20150327131023

Dear everyone and anyone,
 * If Visual  Editor gets stuck on the "loading" message, then there is an error with one of your site or user scripts.  The script probably hasn't been working for some time, and there has been an error message in the javascript console for as long as it has been broken.  You should check your javascript console for more information, and then fix it.
 * The error message will look something like "Uncaught Error: JavaScript parse error: Parse error: Missing operand in file 'MediaWiki:XXXXX.js' on line YYYYYY", where X and Y may be different, and tell you where to go to fix the error.
 * -Love, 452