Try all of these:
- Click the CHECK button in the FSDT installer, which will verify the integrity of all installed files.
- If that doesn’t work, try to download and install the Offline Installer, found on the MSFS section of the “Products and Downloads” page of the FSDT site. There are two links for it, it doesn’t matter which one, they are just mirrors hosting the same installer.
- If that still doesn’t work, try another update CHECK after you installed the Offline installer.
- If that still doesn’t work, there might be a problem with your local cloudflare node, so try updating using a VPN
- If that still doesn’t work, your problem is not GSX, it’s caused by having reached the maximum number of Simobjects in a scene, because your settings (especially AI and Ground vehicles density) were too high. Several users confirmed that by lowering the density for AI and Ground vehicles fixed the problem of missing textures and objects.