Dedicated server connection error

[WTE_Grendal 0]

One of our local ISPs has set up a dedicated server for ArmA (version 1.05). The problem is that the server is appearing on the in game server browser with a red cross next to the server listing in the left hand column. When I try and connect to the server via the in game browser, I get the message “bad version, server rejected connectionâ€.

What causes this message and what can I suggest to the server admins to try and correct the issue?

[Hostilian 11]

Does it appear on the in game server browser as v1.05?

Does the server require clients have certain mod's active before it will let you join?

#C

[WTE_Grendal 0]

It is showing up listed as v1.05 and as far as I am aware there would be no mods.

It looks like the server has the "no mods" switch set on. I am now able to join the server without any mods turned on. (By default I have the FDF sounds mod turned on.)