I have the current version of the virtuemart installed. During check out, the following error is generated:

Please select a Shipping Method!

Fatal error: Call to a member function on a non-object in /home/XXXXX/public_html/administrator/components/com_virtuemart/classes/shipping/intershipper.php on line 332

Turning off ArtioSEF, and one can check out just fine.

Any advice? Thanks.

Been trying to resolve this issue myself, and wanted to report some progress.

I had

BOTH

Intershipper and Standard Shipping turned on. Get to check out with ArtioSEF turned on, and the system kicks out the error above.

I turned Intershipper shipping module OFF in Virtuemart, and the checkout process works perfectly with ArtioSEF turned ON.

Digging deeper, it appears there is a bug in Virtuemart's Intershipper shipping module. Virtuemart forums seem to support that Virtuemart's Intershipper shipping module will be fixed in the next release.

Anyone have other advice?

Thanks.