Dynamo : Vasary crashes opening a custom nodes workspace

I can not use the customs nodes. Even those delivered as samples.

If I try to run a workspace that contains custom nodes Dynamo crashes

(see "Array ws.jpg)

If I do this

Open vasari beta 3
create a new family : new conceptual mass (using mass.rft)
Launch Dynamo
Open Array workspace.

(see crash.jpg)

sorry to hear about the crash. Can you please post issues like this to the github issue list?https://github.com/ikeough/Dynamo/issues?state=open