Firefox won't load after clearing cache - Why?!?!

I'm on a MAC. I cleared my cache and immediately Firefox stopped working. I deleted Firefox from my Applications folder, re-downloaded it from the internet & re-installed it. It still won't start up. When I click on the icon in my Dock, it says "Application Not Responding". I have re-installed it 3 times with no luck.
I read that I could try changing my profile somewhere within Firefox, but if the App is not loading, I cannot access this!
Please Help!

See this help article with all the details about How to open Profile manager.
[[Use the Profile Manager to create and remove Firefox profiles]]
Does it helped??

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IE work fine but I cannot get Firefox to connect even after clearing cache, reseting Firefox and re-installing, what do I do next?

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I run windows vista ultimate and after running auto update firefox wont load. Error message says missing xul.dll
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Do a clean reinstall and download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
Don't remove personal data when uninstalling.
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Here you go,
as Christopher said,
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3 - Proceed as follow;
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[[Fix problems connecting to websites after updating Firefox]]

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== This happened ==
Every time Firefox opened
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Firefox won't load after clearing cache - Why?!?!

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