I have UPS XML Rates and Services v1.2.4 with Dimensional Support installed on my system. Everything seems to be working fine except for when I have Ready-to-ship only enabled under "Enable UPS Shipping" on the admin page. I get the following error during checkout: Warning: usort() [function.usort]: Invalid comparison function. in /home/anotherg/public_html/includes/modules/shipping/upsxml.php on line 243.
Thanks!!!