Should not be a real problem if this building is invisible. It's only a problem to find an object what is not visible or not noticible as a building...
@Elli: normally you can set this in the weapon itself in "moving/disable_moving_firing=true". This disables the weapon. You should check if it works...
@Cope: Thank's man, your fix works very well again. Now all players (ai and human) can hunting again for teamweapons to capture. Do you also have an...