一. mentalray FG not being uploaded affects rendering:
1. lead to wrong rendering result
2. Lead to render sequence animation flicker
二. cause mentalray fg error reason
1. FG map file file is not uploaded (client can't read mentalray FG parameters information)
1. pls use RayvisionSync transmission tool upload FGM files to the platform (upload path must keep consistent with the scene inside set path)
2. If did not use FGM files, pls choose"off" in the Final Gather Map.