Exporting models as.OBJ to mObjects

I have been creating models and exporting them as.OBJ. into to mObjects rendering application ‘https://www.motionvfx.com’ so I can then add materials and texturesl till I’m happy and then I can use them in Final Cut Pro X and apple’s Motion 5.

I keep getting an error message "

couldn’t find mtl file

" so my question is, has anyone used M object if so have they found the right settings to export from Rino to an object