@flyingbee : TY for the blend file - I will take a look at it. The latest version of the Blender Babylon Exporter is v5.3. It comes as a zip file. Download that zip file,. uninstall the old exporter then install the new version using the "Install From File" option in the Preferences Panel. No need to unzip the file, just point Blender to the zip file you downloaded and Blender will handle it. Activate the addon, then hit the "Save User Settings" button. I will take a look at your