Need help - cannot start Kursk campaign game

[Alpha Zwo]

Hi,

I have no problem to start one of the Kursk scenarios, but whenever I try to start a campaign game an error message occurs:

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ERROR
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2017-11-11 10:31:43 cp_start.exe: [ERROR ID 100] (Start.cpp, line 1514, MainWindow::ReadCampaignData()) Scenarios\Scenarios/campaign.cpd not found

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OK   
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Any idea what may be wrong? I even re-installed the game.

Thanks in advance.

Tom