I think you meant Airplus... Aircon doesn't sound like a D-Link program. It
could be that the service pack re-enabled the built in Windows Wireless Zero
Configuration service and created a conflict. When you originally installed
the G122 it should have disabled the Windows service as that does the same
thing as the Airplus WLAN utility, configuring the device settings and
managing wireless connectivity.
Check in the Services control applet to see if Wireless Zero is running.. it
should be disabled if you intend to continue using the manufacturer supplied
WLAN connection utility. If Wireless Zero Configuration is already disabled
or if you still get the error you can try either re-installing the DLink
wireless lan utility or you can do without it entirely. Uninstall the Dlink
utility and its auxiliary services and just use Windows' Wireless Zero
utility to control the DWL-G122 instead. Only the device driver is required
to be installed for the G122.