error "Supported shopping cart not detected" when I open the component

hi,

I've an installation of awo coupon pro on my site with joomla 2.5 and virtuemart 2, I'm updating the version (joomla 3 and VM 3), but once the component is installed, if I try to enter it I get out the error string "Supported shopping cart not detected"  and do not open the administration panel

Ok, need to fix this.  Try this, go to admin > virtuemart > configuration and Save.  Then go back to AwoCoupon, do you get the same issue?

great, this work!