Hi all,
After searching the forum, I found that many fellow simmers experienced the same problem. Upon starting GSX in MSFS, I am seeing the "loading" screen and it gets stuck there. No progress, whatsoever. Reinstalling GSX Pro, restarting Couatl, using FSDT Installer, offline installer, nothing helped and I am still stuck with this problem. I was really hesitant in buying GSX Pro because in P3D, it was already buggy. In MSFS, it seems to be even worse and I sincerely regret my purchase. But before abandoning FSDT once and forever, I hope that someone here has a helpful clue.
Kind and frustrated regards,
Mark