Usd plugin wont load

[InNeedOfHelp]

It was working, but all of the sudden the usd plugin refuses to load. I've tried the typical stuff, clearing preferences folder, reinstalling the plugin and different version several times, removed other maya plugins (arnold, bifrost). I've read that conflicting versions in PATH can be an issue, but don't think that's it in my case. Losing time (and my mind) so help would be much appreciated, thank you.

[InNeedOfHelp]

It was working, but all of the sudden the usd plugin refuses to load. I've tried the typical stuff, clearing preferences folder, reinstalling the plugin and different version several times, removed other maya plugins (arnold, bifrost). I've read that conflicting versions in PATH can be an issue, but don't think that's it in my case. Losing time (and my mind) so help would be much appreciated, thank you.

[a.mayaUser]

Did you find a solution? I'm having the same problem in both Maya 2024 an 2025 on a fresh new installation.

I tried everything, even completely reinstalling from zero, can't figure out what's happening.

[a.mayaUser]

Did you find a solution? I'm having the same problem in both Maya 2024 an 2025 on a fresh new installation.

I tried everything, even completely reinstalling from zero, can't figure out what's happening.

[Christoph_Schaedl]

Make sure you have the right version installed. For example if you install USD 0.29 you need Maya 2025.2
https://www.autodesk.com/support/technical/article/caas/tsarticles/ts/2aZO1BEEN1yOnBswYFuvwz.html

Also uninstall it. Its possible to have multiple USD versions on the system.

[Christoph_Schaedl]

Make sure you have the right version installed. For example if you install USD 0.29 you need Maya 2025.2
https://www.autodesk.com/support/technical/article/caas/tsarticles/ts/2aZO1BEEN1yOnBswYFuvwz.html

Also uninstall it. Its possible to have multiple USD versions on the system.

[a.mayaUser]

After some research and spending the morning (sigh) I think I've found the problem.

The version I'm running are the right ones, they comes with Maya vanilla install, and they are the same I had in the previous OS (same machine, different OS).

At first I thought it was Bifrost, because it was giving me errors on DLLs while starting Maya, but looking at the errors it was all related to USD dlls, and then I found out it was the MayaUSD plugin not loading, causing Bifrost to error out.

From the script editor:

// Error: file: C:/Program Files/Autodesk/Maya2025/scripts/startup/autoLoadPlugin.mel line 40: Unable to dynamically load : C:/Program Files/Autodesk/MayaUSD/Maya2025/0.29.0/mayausd/MayaUSD/plugin/adsk/plugin/mayaUsdPlugin.mll
// The specified procedure could not be found.
// Error: file: C:/Program Files/Autodesk/Maya2025/scripts/startup/autoLoadPlugin.mel line 40: The specified procedure could not be found.
// (mayaUsdPlugin)

So, after some investigation, I found out that there was some problems caused by conflicting env variables, causing the plugin to not load. I couldn't point out which one, since they looked quite harmless and absolutely not related to USD, so I've deleted all the ones not related to windows, and restarted the machine.

Now the problem is solved.

[a.mayaUser]

After some research and spending the morning (sigh) I think I've found the problem.

The version I'm running are the right ones, they comes with Maya vanilla install, and they are the same I had in the previous OS (same machine, different OS).

At first I thought it was Bifrost, because it was giving me errors on DLLs while starting Maya, but looking at the errors it was all related to USD dlls, and then I found out it was the MayaUSD plugin not loading, causing Bifrost to error out.

From the script editor:

// Error: file: C:/Program Files/Autodesk/Maya2025/scripts/startup/autoLoadPlugin.mel line 40: Unable to dynamically load : C:/Program Files/Autodesk/MayaUSD/Maya2025/0.29.0/mayausd/MayaUSD/plugin/adsk/plugin/mayaUsdPlugin.mll
// The specified procedure could not be found.
// Error: file: C:/Program Files/Autodesk/Maya2025/scripts/startup/autoLoadPlugin.mel line 40: The specified procedure could not be found.
// (mayaUsdPlugin)

So, after some investigation, I found out that there was some problems caused by conflicting env variables, causing the plugin to not load. I couldn't point out which one, since they looked quite harmless and absolutely not related to USD, so I've deleted all the ones not related to windows, and restarted the machine.

Now the problem is solved.