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jandress wrote:The 499 Octane will not start in the 499 build. Error message box on Houdini startup:

"(1114)Couldn't load C:/Users/john/Documents/houdini18.0/Octane_2020.1.2.0_Houdini_18.0.499_vr_Win64/dso/HoudiniOctane_18.0.499_vr.dll

This is probably because this file was intended for use with a different version of Houdini."

Update: the 460 version fails with a similar error.

This seems a configuration problem. Can you please attach the houdini.env file that you are using? The problem can be a mistake in the PATH variable, or trying to work with a wrong plugin build for your Houdini version.

Thanks,
-Juanjo

#
# Houdini Environment Settings
#
# The contents of this file are read into the environment
# at startup. They will override any existing entries in
# the environment.
#
# The syntax is one entry per line as follows:
# VAR = VALUE
#
# Values may be quoted
# VAR = "VALUE"
#
# Values may be empty
# VAR =
#

# Example:
#
# HOUDINI_NO_SPLASH = 1

HOUDINI_NVIDIA_OPTIX_DSO_PATH = C:/Users/john/Documents/houdini18.0\optix


HOUDINI_PATH = "$HOUDINI_PATH;&;C:\Users\john\Documents\houdini18.0\Octane_2020.1.2.0_Houdini_18.0.499_vr_Win64;&"

PATH = "C:\Users\john\Documents\houdini18.0\Octane_2020.1.2.0_Houdini_18.0.499_vr_Win64/bin;$PATH"

HOUDINI_DSO_ERROR = 2

OS Name Microsoft Windows 10 Pro
Version 10.0.18363 Build 18363
Nvidia Driver Version 445.87
GTX780
HP Z800 2xX5670 / 48GB
Houdini 18.0 Build 499

After it didn't work the first time I created a fresh houdini18.0 folder, still the same error message. The toolbars show up but adding a node brings:

The attempted operation failed. Invalis node type name

Details:

Traceback (most recent call last):
File "Add_Octane_ROP", line 1, in <module>
File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.499/houdini/python2.7libs\roptoolutils.py", line 10, in createRenderNode
rop = hou.node('/out').createNode(rop_type, exact_type_name=True)
File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.499/houdini/python2.7libs\houpythonportion\ui.py", line 927, in decorator
return func(*args, **kwargs)
File "C:/PROGRA~1/SIDEEF~1/HOUDIN~1.499/houdini/python2.7libs\hou.py", line 9379, in createNode
return _hou.Node_createNode(*args, **kwargs)
OperationFailed: The attempted operation failed.
Invalid node type name





Octane 2020.1.0.8 worked fine in build 460.

jandress wrote: After it didn't work the first time I created a fresh houdini18.0 folder, still the same error message. The toolbars show up but adding a node brings:

The attempted operation failed. Invalis node type name

I wonder if this could be a problem with the NVIDIA drivers or something like that. Do you know if the Octane 2020.1.2.0 Standalone works fine in your system? You can download it here: viewtopic.php?f=15&t=75100

Thanks,
-Juanjo

I have now tried everything including a fresh installation of windows/nvidia/houdini/maya & octane. Octane 2019 standalone or plugins will run. Octane 2020 standalone or plugins will not run. Even as a temporary solution I can't use Octane 2019 for houdini as it does not have a build for houdini newer than 18.0.287 and Octane 2019 for maya does not seem to support Maya 2020 at all.

The only thing I can think of is that for some reason the new windows Octane builds require a cpu instruction not present on my socket 1366 xeon X5670 even though the requirements page lists no cpu hardware requirements. (non-octane cuda runs fine, cycles, resolve etc).

Can anyone confirm that they have been able to run Octane 2020 on a X5670 generation Xeon on Windows?

jandress wrote:I have now tried everything including a fresh installation of windows/nvidia/houdini/maya & octane. Octane 2019 standalone or plugins will run. Octane 2020 standalone or plugins will not run. Even as a temporary solution I can't use Octane 2019 for houdini as it does not have a build for houdini newer than 18.0.287 and Octane 2019 for maya does not seem to support Maya 2020 at all.

The only thing I can think of is that for some reason the new windows Octane builds require a cpu instruction not present on my socket 1366 xeon X5670 even though the requirements page lists no cpu hardware requirements. (non-octane cuda runs fine, cycles, resolve etc).

Can anyone confirm that they have been able to run Octane 2020 on a X5670 generation Xeon on Windows?

People have been reporting problems with older CPUs. Its a Octane Core issue is seems. You should probably go ask in the Standalone thread viewtopic.php?f=24&t=75172&start=10

Yes, I think that there is a problem with this latest build in some old CPUs. The core team is aware of this limitation, and they will try to fix it for the next build, if possible.

Thanks,
-Juanjo