Cannot create tunnel

I am trying to create a tunnel for an IPSec connection. Currently using fortigate 200B running V4 MR3 patch 2 (about to upgrade to patch 4). I already have a number oftunnels, the configs look like this: config global config system interface edit " 1OMainSt_IPSec" set vdom " MCHInt" set type tunnel set interface " DMZ-1Office" next but when I try to make another I get: PN-FWHA2 (interface) # edit " 1Otest_IPSec" new entry ' 1Otest_IPSec' added PN-FWHA2 (1Otest_IPSec) # set vdom " MCHInt" PN-FWHA2 (1Otest_IPSec) # set type tunnel command parse error before ' tunnel' Command fail. Return code -61 I also cannot set the interface: PN-FWHA2 (1Otest_IPSec) # set interface " DMZ-1Office" entry not found in datasource value parse error before ' DMZ-1Office' Command fail. Return code -3 From the GUI the tunnel option does not even appear, neither does the correct interface (which is a vlan). Existing tunnels work fine and are configured the same way. Any idea what is happening? I' m desperate for some help here! Tom