Web Inspector crashes on Safari 7
I have just fixed precisely the same problem on a site. Its annoying when a debugger chokes so it can't help you find the problem!

My problem was caused by a stray class making its way into a style.

&lt;div style="background: #ffb380; padding-bottom:30px; width:300px; text-center;"&gt;


Removing the text-center fixed the problem and web-inspector loads correctly.  I would expect you also have an error in the page that is causing web-inspector to choke. Two approaches I can recommend:


An online error checker e.g. http://www.onlinewebcheck.com/
Track down the issue by removing content from the page until web-inspector loads.