Enable 802.11d - With this check box selected, the WLAN adapter attempts to retrieve the country from APs. Profiles which use Infrastructure mode are only able to connect if the country set is the same as the AP country settings or if the profile country setting is set to Allow Any Country.
I unchecked the "enable 802.11d" option for the US, and the scanner connects to the network. The ending part of the last sentence appears to be inaccurate, as I had my profile set to "Allow Any Country", and I still got a region/country error.