Sorry for the long delay of this answer. Indeed, I have over-looked this posting again …
We have started the new “Navigraph Navdata Center” now and we have decided to upgrade the FDM to this new tool. The reason is very simple. The FDM is over 10 years old now, so the technology behind more or less not accurate (outdated is not the best wording for this). We have changed a lot in our backend-systems (from the identity features to the databases which we use) . So the FDM doesn´t fit any longer in this new concept. We have created the new “Navigraph Navdata Center”, which is in use with the new MSFS updates and for their addons.
The message you get is a message which can´t be handled very well. It´s a combination of tools you have installed on your system and a mix of different redist-packages. I have had three different remote-sessions and all three had different issues with different results. It´s hard to find the reason and it took a lot of time (one session, we spent 6 hours identifying the program which caused the issue).
The good thing is this is an error-message , that has no effect in the FDM. When you click ok, the FDM starts without any further issues. Also, it doesn’t effect on any feature inside the FDM. The error message comes from the special library we load at the start-up, which we don´t use after that point.
Due the new development of the “Navigraph Navdata Center”, it makes no sense to investigate further at this time. The FDM is working (after skipping this message). We still support the old FDM, if we identify some essential issue inside the application.
I know, not the best answer for you but I hope you understand our intention. We work hard on the implementation of the new “Navigraph Navdata Center”. This is not a one day task - it needs time to implement all features from the old FDM in the new app. I hope you give us the time …