Training stops with "IndexError" after increasing Vector Action's branch size

Hello,
I'm using Ml-agents 1.0 Release 3:


I've been training my agents without problem with these behaviour parameters:

Configuration: 3 branches for the vection action, name of the behaviour: Agent_3Actions

With this configuration the training works fine and without problems.

Normal Output for this case:

However, when I try to add a new branch to the Vector Action, the learning randomly stops and I get an "IndexError".

Configuration: 4 branches for the vection action, name of the behaviour: Agent_4Actions

Output when it stops training:

I'm not sure, but I think the error appears when the learning process tries to save the model.

I've made sure to use a different trainer_config.yaml for each case and that the Behaviour Name is the correct one.

Any ideas? I appreciate any help with this issue.

Cordially,
Diego.

which files are saved in the results folder in the above run? Is the model saved?


These are the files created, the model is saved: