Substance 3D in Blender: An error ocurred while setting the material [9]. [0.006]seconds

Hello @Dukekusan , are you using Blender 4.3? Unfortunately the addon is not currently compatible with this version, but we are releasing an update for that soon. In the mean time, I recommend working in Blender 4.2 to use the addon.

Best,
Aldo

I have the same problem with Blender 4.3 for Windows. 4.2 works fine.

Same issue here. Blender 4.3.0  macOS Sequoia 15.1.1, M4 Max. 

Unfortunately I don't have a solution, but the same error is happening to me. So far I have not found a solution on the internet 😕😕 So looking for help here...
But I noticed that the material seems to "load" but the error is somewhere in the nodes, they are not connected, since if you link them the material will show up. But Unfortunately, after any action to modify the meterials, everything disconnects again and the same error is reported.