Thanks for the tip - it did not solve the problem, but the setting was wrong...
(at) Hollywood:
Thanks for your PM. I think I have problems to reply on your PM, why so ever... Here is my reply:
Hi Hollywood,
thank you very much for your quick response, much appreciated...
I already had 1.5.12 installed, but I didn't uninstall the previous version proper. Now "Start Missions" runs perfect and Num0 etc. are working fine... BIG THANKS!
One problem left is, that the VAC ATC Menu Mod is not working properly. After installing via JSGME, the DCS key for radio command (which should open the comm menu) does not work anymore... Therefore no messages will be transmitted via VA.
It runs fine without VAC ATC, but I think I will run into problems to radio to the airfields, or? Any idea?
One last question: Do you have any idea, if I can use VA without changing my German WIN10-system to English?
Cheers,
MadMonty