Prman warning

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Hello,



Rendering a simple scene( sphere), I get this warning with the H9 Renderman ROP (Prman 12.5) in the Houdini console:

R20001 Unknown RiAttribute parameter: visibility transmission (WARNING)


View: renderman does not give this message.


Using H9.1.218, windows xp


thanks,


bern
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I thought there were some changes to that attribute in Prman 13 , more importantly does it render ? as it only is a warning.

Rob
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Is your Render Target parameter on the RenderMan ROP set to prman 12.5?
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Yes, it does render and it's set to 12.5


many thanks Edward and circusmonkey,



bern
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