Not exactly a request. More informational.
The c3d file you guys dump out of Arena is not really compliant to the spec.
It has no Analog or Force Plate parameters.
The spec is pretty clear that these should be there, even if there is no analog or force plate data.
I was able to adjust my code to be happy, regardless of the absence of these expected parameters. So its not huge for me.
But I suspect it could cause problems with other c3d reading code out there. I've seen c3d code that would have issues for certain.