First I started with a blank mission in the multiplayer editor. Placed a single player and respawn module. Then I created a sector complete with side logic and area/trigger combo. I verified that this worked and it did. I copied and pasted that sector to create another five sectors (named Sector 1 - 6 and designated A-F). I verified that these also worked. Then I sync'ed the first two sectors with the unlock game logic and trigger set to blufor. Doing this causes the game to hang at the loading screen. Removing the sync between the first and second sector returns the mission to a working status.