Arnold not loading in maya

[Anonymous]

I get this error when I try to load Arnold in Maya

00:00:001748MB WARNING |  hairPhysicalShader_shaders.dll was compiled against non-compatible Arnold5.0.2.100:00:001748MB WARNING |  lookdevkit_shaders.dll was compiled against non-compatible Arnold5.0.2.100:00:001748MB WARNING |  mtoa_shaders.dll was compiled against non-compatible Arnold5.0.2.100:00:001748MB WARNING |  renderSetup_shaders.dll was compiled against non-compatible Arnold5.0.2.100:00:001748MB WARNING |  synColor_shaders.dll was compiled against non-compatible Arnold5.0.2.100:00:001748MB WARNING |[metadata](C:/solidangle/mtoadeploy/2018/plug-ins/mtoa.mtd:2872)Node entry does not exist00:00:001748MB WARNING |[metadata](C:/solidangle/mtoadeploy/2018/plug-ins/mtoa.mtd:2879)Found attribute outside a node00:00:001748MB WARNING |[metadata](C:/solidangle/mtoadeploy/2018/plug-ins/mtoa.mtd:2882)Found attribute outside a node00:00:001748MB WARNING |[metadata](C:/solidangle/mtoadeploy/2018/plug-ins/mtoa.mtd:2885)Found attribute outside a node00:00:001748MB WARNING |[metadata](C:/solidangle/mtoadeploy/2018/plug-ins/mtoa.mtd:2888)Found attribute outside a node00:00:001749MB WARNING |[mtoa.attr]CBaseAttrHelper passed unknown Arnold node type "MayaImagePlane"00:00:001749MB WARNING |[mtoa.attr]CBaseAttrHelper passed unknown Arnold node type "MayaFile"00:00:001749MB ERROR   |[mtoa.attr] A valid node entry must be passed to query data for parameter "mipBias"00:00:001749MB ERROR   |[mtoa.attr] A valid node entry must be passed to query data for parameter "filter"00:00:001749MB ERROR   |[mtoa.attr] A valid node entry must be passed to query data for parameter "useDefaultColor"API error detected in plugins\mtoa\extension\ExtensionsManager.cpp at line 592:(kFailure):UnexpectedInternalFailureAPI error detected in plugins\mtoa\extension\ExtensionsManager.cpp at line 592:(kFailure):UnexpectedInternalFailureAPI error detected in plugins\mtoa\extension\ExtensionsManager.cpp at line 592:(kFailure):UnexpectedInternalFailureAPI error detected in plugins\mtoa\extension\ExtensionsManager.cpp at line 592:(kFailure):UnexpectedInternalFailureAPI error detected in plugins\mtoa\Main.cpp at line 1035:(kFailure):UnexpectedInternalFailure00:00:001749MB ERROR   |Failed to import python module'arnold'

[Stephen.Blair]

You've got mis-matched versions of Arnold and MtoA.

Either your MtoA install is messed up, or there's an ai.dll in your system PATH

[Anonymous]

so,what should to do ?to solve this problem

[lee_griggs]

Reinstall the plugin from here.

[Anonymous]

I'm answering to this because I found myself in the exact same problem.

In my case cryptomatte aovs didn't show up and arnold wasn't able to convert textures to .tx

USING MAYA 2019.2 and arnold 4.0.4

I managed to solve this but it took me a while.

I did the following.

-uninstall ALL versions of maya.

-uninstall ALL plugins related to maya.

-manually remove all maya and solidangle folders:

program files, programfiles x86, appdata, programdata, users/XXX/maya, c:/solidangle

-I also did a search for maya on disk :C/ and deleted all installation related files I could find.

-cleaned the registry with Ccleaner after all that.

_reinstalled maya and arnold.

Now it is working for me.

I know it is a hassle to do all that. But I really didn't want to format my pc. so it is worth it.