I would guess you need the fixpack that includes the new .mos files CamDawg linked above, but the actual attachment in that link is not valid for me.
I believe the link is before the forum change-over. A lot of the old links don't work now since there appears to be a different addressing system. (I could be wrong about this, of course.)
Edit: The link above by CamDawg is for v5, not v7. As expected,
The requested URL /downloads/iwd_in_bg2-v5.exe was not found on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
@ matyas - You definitely should install the latest fixpack/hot patch, which is v10 I believe.
Edited by grogerson, 13 May 2012 - 04:25 PM.