I notice compiling errors for glTF files which are exported specifically with the multi-export function, when using the latest SDK 0.20.xx. The same models, when exported as single objects (through babylon) have no issues compiling. Rolling back to SDK 0.19.xx, or earlier versions (using same models) has no issues during compiling after multi-exporting. Also, models exported with previous SDKs, if re-exported with 0.20.xx through the multi-exporter, will create compiling errors.
I believe there is a 'missing closing tag' error associated with the multi-exporter in 0.20.xx?
Let me know if i can provide any example files to test.