Hi everyone,
I am facing the same problem. I created simple cnn  using sequential implementation (torch::nn::SequentialImpl )  i can  actually use   model->forward(Sometensor) but it crashes when i save the model and load it again with jit.
The root of the problem is unclear since i am getting an  unhandled exception  .
I opened an issue here : https://github.com/pytorch/pytorch/issues/25142 37.