I am Hijacking this thread with a near similar problem:    
- I have DCS world installed w/o steam. 
- I registered and use A-10C with the non steam version. 
- I have Black Shark 1 installed on steam 
- I bought the Black Shark 1 to Black Shark 2 upgrade 
- During installation of the upgrade, my Black Shark 1 installation is not recognized 
???   
What can I do now?