Can't Click Airfields?

[tf_neuro]

Sorry for asking for help without providing sufficient data, but that's all the information I have.
Here's the story:

Testing CoD online with a gaming buddy, he was the server I was the client, connection OK, map shows up, I choose the army, click the airfield, spawn. So far so good.

Then like a minute or 2 later, he loads another map, I choose the army... and I couldnt click any airfields any more.
Also, there was no red airfield on the map, they were all white and unclickable.

We tried all the usual stuff like disconnecting and reconnecting, reloading the mission, restarting the game, ever reboot the whole machine, but no luck.
I couldnt click any airfields.
We gave up after a while, and went on to play other games.
That was last night.

Earlier today, we tried again but with inverted roles: I was the server and a game buddy (another one) was the client.

Connection OK, map shows up, selected army... and again, I couldnt click on any airfield, but he could.

So it's not about sever/client stuff, it must be something on my end, but I have no idea what I did... I remember that I could click airfield, then another mission was loaded and I couldnt click any more.


Sorry for insufficient data, again. Maybe it can be sorted out anyway? Ever heard of a problem like this? What are the most common causes? Anyone had similar problems? How was it solved?

Any help really appreciated