fedex not installing

[tim]

When I first installed fedex it worked fine. Now it's not showing up in shipping options on checkout. I have uninstalled it and reinstalled it. No cigar. Any ideas?
Thanks;
Tim

[abantecart]

Extensions do not disappear on their own.

Please check there are no conditions that prevent shipping to show. Example: Min/Max amount, location region of the customer, general settings.

Always check the log for any possible error or warning. 

[eCommerce Core]

Did you do any changes in settings, when you notice it is not working?

[tim]

I do not recall making any changes other than deselecting a couple of shipping methods such as first overnight and priority overnight.
I tried turning off UPS & USPS leaving fedex as the only shipper, and nothing came up on the shipping estimate when I did a fake checkout.