ML Deformer not training and giving no error message on 5.5

[NBlank_Unreal]

Hello, I was doing testing for an upcoming project on UE 5.4 using the ML Deformer after many trials I got some decent results and felt prepared, I was able to get both NNM and NMM working. On using the UE 5.5 that we are using for the project I notice some small UI changes so it is a different version than 5.4. When I go to train using the same data using the NMM Model, it says the standard error message but no error message is populated in the log just saying “There is a python error, please check the output log.” With no error or any data listed.

Worse I think in the NNM model, it does give a message but I have no idea what it is referring to “LogNearestNeighborModel: Error: Basis is invalid. Please re-train your model”. But this is during training it just stops instantly and has the error popup.

Using the same models and training data for both UE 5.4 and UE 5.5, I can’t share the models but I used the same methods for both and I don’t see any info on changes in methods between 5.4 and 5.5, so any ideas on what might be going on or if anyone had a similar experience?

[DDeVoe]

There has been some reports for Windows 11 users that they are missing certain DLLs that some of the python tools rely on.

Can you try downloading this dependency checker, unzipping it, and then running DependenciesGui.exe. You can drag and drop this file on the gui:

We want to ensure you have the library libomp14.dll on your machine.

If it is red, then you are missing it, you can install the Visual Studio 2022 Build Tools to get them using this command:

winget install --id Microsoft.VisualStudio.2022.BuildTools --override "--passive --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64"

or you can potentially get it by using the Visual Studio Community installer to install the build tools module.