The current pre-release of the client ("pioneer" in the version) is only compatible to itself. So you can only play with other testers. Please be aware!
Hello I_Darkstar_x,
welcome to FAForever.
Maps are normaly stored in the folder:
C:\Users\YOURNAME\Documents\My Games\Gas Powered Games\Supreme Commander Forged Alliance\Maps
Move to this folder, sort it by date and the last installed map should be your direct strike map.
Delete it.
