International Shipping Problems Since Upgrade

Since the latest upgrade to 4.3.8 my International shipping options have quit working for my larger products. I've been using CSC for a long time but this one has me stumped. I've gone over every setting but when I try to ship a large box (68lbs 36x17x7") to anywhere outside of the US... even Canada via International Ground or Priority Mail Express (or anything else I try).... I get nothing... the no available shipping methods warning.

What has changed? Is there a bug or something I'm missing in the upgrade? Was working fine until the upgrade.

Same here. Most if not all Canadian address don't work.

Any answers would be most appreciated.