I'll take a look at RC3 later, and try SMFShop with it. If it works fine, I'll update the package
[On the topic of RC3... if we do want to upgrade to the new versions of SMF, are we going to basically lose all the work on our shops because we have to re-install everything? If so, is there an easy way to maybe back up items/inventories/everyone's money? I did a little dance last night at the news of the release, until I realized this.
As far as I know, installing RC3 will uninstall all MODs? If so, then SMFShop will be uninstalled. The best way to save your information would be to create a backup of the smf_shop_* tables in phpMyAdmin (Export them, with data). Then, save the output. Once you get everything working again, restore the backup
EDIT: OK, it appears to work fine with SMF 1.1 RC3 (using the SMF 1.1 RC2 install XML file). I've just updated the archive to work with it