Running Windows 7 PC, connected to a brand new airport extreme via 802.11n. Running Airport Utility 5.5.2. When I run Airport Utility, I can see the base station in the left panel, but both options to either run manual setup or "easy" setup give me the same error. Says that it cannot connect to the airport, error -4. Tried everything I could think of including multiple re-installs, wireless and wired, and disabling firewalls/antivirus. Anyone have any other ideas before I return this thing for something else?