Mental Ray stops rendering after 1 sec

#1

I spent this whole afternoon test rendering my Dinosaur in maya. I gave it both Desp and Subdivision via Approximation Editor and it was working fine until I changed the Floor shader to lambert. Since then MR stops rendering after 1 second and this error shows up in the script editor;

Warning: (Mayatomr.Scene) : output data type “rgba_h” not directly supported by image format iff, conversion performed by mental ray //
// Warning: (Mayatomr.Geometry) : Buck_bodyShape: subdivision surface does not support separate displace approximation, ignored. Tune primary tessellation / approximation for displacement. //

Is there anyway I can fix this?
Here’s a screenshot for to give you guys a better idea

#2

Neither of those are causing your errors. They are just warnings but you should pick a different output format – IFF is a very old format that should be avoided but somehow it’s still the default. Use PNG or TIFF if you’re doing 8- or 16-bit images (which you probably are) and EXR if you’re doing 32-bit

Try and relaunch Maya and see if that helps

#3

Go to Render -> options and put the verbosity up to highest.
Then render and check the output window and/or attach the log text here and I’ll take a look at it.

/Risto