Arnold shader nodes not showing in Houdini

[willibarret2000]

01_img.pngI'm trying to create a basic material, I can create the Arnold Shader Network but if I dive into it there is no Standard surface nor any other shader.

I guess the Env. file is set up correctly since the Arnold tab is present, so I don't understand what I'm doing wrong.

I'll attach a picture, thanks in advance for the help.

[pal.mezei]

Hi!

Can you share your environment with us? Go to Help / About Houdini / Show Details, press Save and share the resulting file.

Cheers,

Pal.

[pablo_gazquez]

Houdini_Info.txt

the same problem

[Stephen.Blair]

How do you start Houdini? Start it from the Houdini Command Line Tools, don't double click on a hip file.

[pablo_gazquez]

This is my problem

[pal.mezei]

Hi!

I think I found your issue. Looking at the env file, I noticed that the HTOA folders are present twice both in PATH and HOUDINI_PATH, and doing the same thing locally broke my shaders.

You can try the following:

Locate your houdini.env file (should be in C:\Users\pablo\Documents\houdini18.0) and make sure the PATH and HOUDINI_PATH contains the HTOA folders only once.

It should look like if you are using the HtoA installer:

# htoa config start

PATH = "$PATH;C:/Users/pablo/htoa/htoa-5.3.0_r233605f_houdini-18.0.499/htoa-5.3.0_r233605f_houdini-${HOUDINI_VERSION}/scripts/bin"

HOUDINI_PATH = "C:/Users/pablo/htoa/htoa-5.3.0_r233605f_houdini-18.0.499/htoa-5.3.0_r233605f_houdini-${HOUDINI_VERSION};&"

# htoa config end

After this, go to control panel / system / advanced system settings / environment variables and make sure PATH or HOUDINI_PATH does not contain any htoa specific folders there. (and logout/login if you do remove something from there)

After all this, reopen Houdini and the shader nodes should be visible again.

Please let me know if this works for you.

---

It seems that having HtoA twice in HOUDINI_PATH is the culprit. (same thing happens with HtoA 5.4)

[Stephen.Blair]

If you double-click a hip file, that runs a different executable (eg on Windows, hview), and the environment is set differently (with the two entries that cause the problem)

[pablo_gazquez]

How I can start Houdini with Houdini Command Line Tools step by step ??

[pablo_gazquez]

It doesnt work for me 😞

[Stephen.Blair]

It's in the Windows Start menu, under Side Effects Software > Houdini > Utilities

Then run houdini or houdinifx or hindie

[pablo_gazquez]

Stephen that was the problem, SUCCESS!!!!!!!!! I`m very happy 🙂

THANKS

[opsismotion]

I have the same problem, I have tried everything and nothing works. I'm going crazy, I've been trying for a week. It's a very expensive product to have so many problems.

[biiiped]

hello,

is there a way to change the env that is used by houdini when double-click on a file?

[biiiped]

okay , so i removed one of the 2 path :

and now it work , i can double click scenes and there is arnold nodes, i just try a bit, i don't know if this will cause other problem later, i hope this is the solution !