[King Franky]

Unfortunately, I have the same problem.

Is there an additional mod we have to download in order to get 126 Squadron or do we have to edit the .mis files and replace 126 Squadron with a Squadron which is available with our installaton?

Yep, I'm sorry, I've got the same problem during loading the 1st mission.
Is there something we can do to fly your promising campaign?

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Also it seems your campaign is at mission4today in the wrong section. I found it at "Kategorie Campaigns (DGEN)", but it is a static campaign, or isn't it?