TyFlow Ext Map Channel is already registered

[alexp]

You'll have to ask the VRay devs about that. I don't have any control over their GPU implementation of tyFlow features, and "tyFlowExtMapChan" is not something tyFlow creates or has control over - it's something they've apparently implemented.

Sure thing, I have also posted it on the chaos forums.

How about the second question? Is this the correct approach for creating 2 x mapping channels? 

Assuming the way I have set it up is creating some sort of conflict

Thanks