Hi,
Got this massage while converting materials....
>>> SCENE Info: <<<
Corona version: 5, build timestamp: Nov 5 2019 10:08:00
Converter version: 1.42
Max version: 18000
Installed Vray plugins: V_Ray_RT_3_20_03 V_Ray_Adv_3_20_03
# Material conversion took 0.178 seconds
# Iterations: 43, converted: 39
# Map conversion took 0.012 seconds
# Iterations: 32, converted: 15
# Light conversion took 0.016 seconds
# Iterations: 3
Error occured in Autodesk_Material : Solid Glass:Autodesk_Material
-- Unknown property: "Generic_Color" in undefined
Error occured in Autodesk_Material : Ceramic:Autodesk_Material
-- Unknown property: "Generic_Color" in undefined
Error occured in Autodesk_Material : Wall Paint:Autodesk_Material
-- Unknown property: "Generic_Color" in undefined
Error occured in Autodesk_Material : Metal:Autodesk_Material
-- Unknown property: "Generic_Color" in undefined