AccessViolation Exception with C# client

I used model adaptation steps from https://alphacephei.com/vosk/lm to train the "vosk-model-en-us-0.22" model with some custom words. When i use the trained model with vosk c# client (version 0.3.38) i get the this error.


I am not getting errors during the training step, so i think the model is fine. But, the vosk client is not able to recognise it.
The setup works fine if i use any any modelds for https://alphacephei.com/vosk/models

Any suggestions on what could be causing this?