First I should say that there are many questions and answers on this topic around the web but I'm not finding anything close to what's happening here so I really hope someone here is able to help.
I have the wysiwyg disabled by default and when I click on Insert Image the pop up comes up as expected but is not fully rendered, see attached screen shot.
The console is saying Uncaught SyntaxError: Unexpected identifier, see attached screen shot.
I have disabled all extensions to rule out conflict + both media and wysiwyg folders have 777 permissions.
EDIT: I have tested Chrome, Firefox and Safari on Mac + Chrome on PC, all with the same result.
Just let me know if I left out any necessary info!
Big thanks in advance!