Maya/Arnold unable to convert from exr to tx

[salvatore_costanzo2D97X]

Hi everyone,

Yesterday all works fine, but today for some reason maya/arnold it's unable to generate a tx file from an exr texture (a base color one, made in substance painter)... but yesterday it was able to do it (same texture, same model, same settings)
I don't know why I constantly get the maketx and texturesys errors, that makes the rendering process to be aborted automatically by the software.

I also tried to made the textures again from the beginning with a new project in painter, but nothing, the basecolor's tx isn't generated even with the new textures.
Someones know why and what to do?

[Stephen.Blair]

Can you post the full text of the error messages? 

[salvatore_costanzo2D97X]

Hi, the errors are these (to simplify, I replaced the files' path with "[filepath]") and occur in Maya 2024.2 with Arnold 5.3.4.1:

[maketx] make_texture ERROR: Could not open " [filepath]/Sweatshirt_BaseColor.1001_ACEScg_ACEScg.exr.886b7ea4.temp.tx" : Could not open "[filepath]/Sweatshirt_BaseColor.1001_ACEScg_ACEScg.exr.886b7ea4.temp.tx" (No such file or directory)

// Error: ERROR | [texturesys] error creating "C:/Users/[username]/AppData/Local/Temp/TX/[filepath]/Sweatshirt_BaseColor.1001_ACEScg_ACEScg.exr.tx." Using "[filepath]/Sweatshirt_BaseColor.1001.exr"

// Error: ERROR | [texturesys] error creating "C:/Users/[username]/AppData/Local/Temp/TX/[filepath]/Sweatshirt_BaseColor.1003_ACEScg_ACEScg.exr.tx." Using "[filepath]/Sweatshirt_BaseColor.1003.exr"

Anyway, I already found the problem yesterday, probably a bug has occurred in Maya: the software want, only for the  "sweatshirt base color" 's textures, a specific folder's path and file name. If i change them, it's unable to generate the tx files and get the error (even though I update the files' path in the Hypershade and in File Path Editor).

But the strange thing is that if I change the pathes or names of other textures, the sweatshirt's ones (like the normal or AO) or of the other meshes (even the base color of them), the error doesn't occur: only for the sweatshirt base color.

So, for avoiding it, I put the sweatshirt base color in the "right" folder with the "right" name (for Maya), make it generate the tx files, copy them to the folder where I want them, change the path in Hypershade and start the Arnold render process, and all goes fine... But i don't think that the problem is solved... What would happen if I change computer? And why Maya wants, for only Sweatshirt Base Color, that specifics file path and name I gave in the beginning?

[Stephen.Blair]

 Could not open "[filepath]/Sweatshirt_BaseColor.1001_ACEScg_ACEScg.exr.886b7ea4.temp.tx" (No such file or directory)

Either filepath does not exist, or maybe there's some permissions problem.

[dave.cooleyVKJNJ]

If you are using the TX manager or update TX files options, you're not alone in getting errors. I have noticed that those options stopped working a few versions back. I just went with letting the TX files update during render to avoid it. 

Now, other things:

file paths are directing to a "temp" location? If they worked yesterday, did you restart the system and all your temp files were cleared? 

just a thought. 

try searching the directory path for those files, and re-align the path if necessary. if there are already existing .tx files, you would likely need to delete them with Maya closed and then try to convert after re-opening. 

Good luck. I know it can be frustrating. 

[thiago.ize]

The temp directory is used for creating .tx files if Arnold doesn't have permission to write into the directory containing the source .exr file. If arnold is failing at also creating files in this temp directory then I suspect you might have run out of disk space or you have some overly restrictive file permissions or maybe another program already has this file open and is preventing writing to it?

Another possibility is that [filepath] maybe contains some non-ascii characters that is tripping up Arnold (and would need to be fixed in Arnold).