I am using windows XP, and I installed the game to the default location.

I have played all the missions previously, and the problem only started last night when the 1.5.4 update was installed.

<t> When I finish a mission the next mission screen comes up, the "tick" button is not greyed out, but it doesn't work when I click on it.<br/>
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So far it has done this to the Desert and DDay missions... I have started the Bulge campaign to see if it will do it with that one too.<br/>
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That still doesn't allow for the fact that when you finish one mission you can not advance onto the next mission. I have to go to the main menu and start again to play the next mission... I can no longer click on the tick once I have finished a mission to play the next one.

<r> Does anyone else have the problem where the campaign games don't load up after the 1.5.4 patch has been installed?<br/>
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I can only play the next game in a campaign after exiting the game and playing each mission as a one off game, which is disappointing as the notes for the 1.5.4 patch ...

<t> First of all, my apologies if I have posted this in the wrong area, but I couldn't see an area appropriate for it.<br/>
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A week ago I tried to order a game via the Matrix web site, but each time I tried the site could not process the order.<br/>
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I contacted the help desk as ...