Hi @MartinIC, I have just run into the problem with both CreateSurfaces and CreateExtrusions. It is particularly tricky because of the intermittent failure. Did you ever manage to resolve it?
The only workaround I have at the moment to generate each char individually and then splice together, but I’d prefer to avoid going that route.
For anyone else who encounters this bug, I found that single character generation to be stable. I offset each TextEntity.Plane in a loop using the bounding box of the previous char.