17.5.173 + HtoA 4 - Error and current workarounds (.ENV fixed in 17.5.204+)

Pinned

March 25, 2019 20:05
Edited

If you get the error below it is because Arnold and Quixel is colliding in the Houdini.env file.

If your Houdini.env file looks like this:

# htoa config start
PATH = "$PATH;C:/Users/magnu_000/htoa/htoa-4.0.0_r33d20a4_houdini-17.5.173/htoa-4.0.0_r33d20a4_houdini-${HOUDINI_VERSION}/scripts/bin"
HOUDINI_PATH = "C:/Users/magnu_000/htoa/htoa-4.0.0_r33d20a4_houdini-17.5.173/htoa-4.0.0_r33d20a4_houdini-${HOUDINI_VERSION};&"
# htoa config end

## QUIXEL ##
HOUDINI_PATH = "$HOUDINI_PATH;I:\Assets\Megascans\support\plugins\houdini\2.0\MSLiveLink;&"

Then the Arnold VOP nodes wont load and you will get the above error sending Quixel Assets from Bridge.

Solution 1.) Put the Quixel line before the Arnold line like this:

## QUIXEL ##
HOUDINI_PATH = "$HOUDINI_PATH;I:\Assets\Megascans\support\plugins\houdini\2.0\MSLiveLink;&"

# htoa config start
PATH = "$PATH;C:/Users/magnu_000/htoa/htoa-4.0.0_r33d20a4_houdini-17.5.173/htoa-4.0.0_r33d20a4_houdini-${HOUDINI_VERSION}/scripts/bin"
HOUDINI_PATH = "C:/Users/magnu_000/htoa/htoa-4.0.0_r33d20a4_houdini-17.5.173/htoa-4.0.0_r33d20a4_houdini-${HOUDINI_VERSION};&"
# htoa config end

Solution 2.) Remove the $HOUDINI_PATH; from the Quixel line.

# htoa config start
PATH = "$PATH;C:/Users/magnu_000/htoa/htoa-4.0.0_r33d20a4_houdini-17.5.173/htoa-4.0.0_r33d20a4_houdini-${HOUDINI_VERSION}/scripts/bin"
HOUDINI_PATH = "C:/Users/magnu_000/htoa/htoa-4.0.0_r33d20a4_houdini-17.5.173/htoa-4.0.0_r33d20a4_houdini-${HOUDINI_VERSION};&"
# htoa config end

## QUIXEL ##
HOUDINI_PATH = "I:\Assets\Megascans\support\plugins\houdini\2.0\MSLiveLink;&"

Comments

4 comments

MagnusL3D

March 23, 2019 19:28
There is one more issue currently with 17.5.173 and HtoA4, the old workaround for opacity inside the Quixel Arnold HDAs is no longer working in HtoA4, the best solution for the time beeing is that if the object you are sending over does not have a opacity map, just disconnect the opacity connection in the material.
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efxlab

March 23, 2019 19:52
yes I confirm for env. Now it works. For opacity its right if the opacity is empty it need to break the connection. thanks
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MagnusL3D

March 25, 2019 20:03
The Houdini.ENV file issue was a bug in Houdini that has been fixed 17.5.204 and above.
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dan_ita

November 09, 2019 08:23

Edited
Houdini 17.5.360 here, still same problem. I have redshift installed, not arnold. I have tried both ideas with no success (moving the Quixel line before the RS line, the quixel megascan menu disappers from houdini ). Please help!

Here is the error:

Traceback (most recent call last):
File "E:/Megascan/Megascan Library/support/plugins/houdini/3.4.0/MSLiveLink/scripts/python\MSLiveLink\MS_API.py", line 127, in InitializeImporter
self.initAssetImport()
File "E:/Megascan/Megascan Library/support/plugins/houdini/3.4.0/MSLiveLink/scripts/python\MSLiveLink\MS_Importer.py", line 136, in initAssetImport
path = self.importGeometryData( self.GeometryList, AssetMaps )
File "E:/Megascan/Megascan Library/support/plugins/houdini/3.4.0/MSLiveLink/scripts/python\MSLiveLink\MS_Importer.py", line 566, in importGeometryData
self.separated_items = MS_separator.ms_geometry_separator(self, subnet, meshList, material)
File "E:/Megascan/Megascan Library/support/plugins/houdini/3.4.0/MSLiveLink/scripts/python\MSLiveLink\MS_separator.py", line 190, in ms_geometry_separator
separated = create.createNode('geo', item)
File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.360/houdini/python2.7libs\houpythonportion\ui.py", line 850, in decorator
return func(*args, **kwargs)
File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.360/houdini/python2.7libs\hou.py", line 8568, in createNode
return _hou.Node_createNode(*args, **kwargs)
hou.OperationFailed: The attempted operation failed.
Invalid node name

EDIT: It seems to happen only with Mushrooms, and Button Mushrooms, at least among the models I have... Thanks!

EDIT2: re-downloaded asset and problem seems fixed. Thanks!
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