Displacement not working in the scene! Arnold renderer

[Anonymous]

Hi, Please help me. I have created a scene for my animation project. I have downloaded a rig from internet which i am using in my scene. First of all, when i start the scene it gives the message that 'This Scene contains Mental Ray Nodes'. Since i am using Arnold so i don't have Mental ray plug in Installed. 

I don't know for some reason displacement maps are not rendering in Arnold in that particular scene file.  But If I open a new scene and try those displacement maps they do work but they are not just working on any object in the scene where i have imported the rig. 

The settings for the displacement maps are all correct. Subdivision is catclark and iterations are 5. 

Any help would be appreciated. I am attaching the the screen shot and the script file which shows a lot of errors. kindly please have a look and help me fix the issue. Thanks

[teddude75 · Accepted solution]

To start off you have a lot of nodes that aren't necessary. It's best to import your rig into an empty scene. Also the plugin called "bonus tools" has a button to remove mental ray nodes from your scene. You can also use optimize scene  size and remove unknown nodes. That will help with render times and loading your Maya file. 

OK, now for the displacement issues. I think that Arnold has a trouble dealing with .tif file (double check with Autodesk to make sure). It seem to have trouble convert the textures to .tx. When Arnold renders it converts everything to .tx file for faster rendering. You can see which .tx files are made in the tx manager under the Arnold tab. Also, make sure that the file path to your textures is correct. You also could convert the Mery rig to Arnold ai Standard surface would help. There is some object on Mery that should have opacity turned off (gloss eye ball and eye lashes).