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FSUIPC connection to FSX with sample provided in SDK

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I am the author of the ADE Environment Checker that accompanies Jon Masterson's ADE. I am overhauling the tool to support P3D. One of the functions is to test the connection to each installed sim. For this I am using a basically unchanged version of the sample provided in the SDK (we are talking about VB6 here).


This works fine for FS9 and P3D, but the same code results in the error message "Call cannot execute, link not Open" for FSX. This used to work in the past.

Do you have any idea what might be causing this issue?


Thanks a lot!

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Thinking about what I said above the only relevant thing that has changed between when the FSX connection still worked is the FSUIPC version. The failure occurs with the current version I replaced it with the first older version that I could find ( and it is working again.


Any idea why this is?

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