[Diger]

When specifying a Species Model I chose 3 components air+n2+propane.
Now when I click on the full multicomponent diffusion and then apply I get this error...Though when I turn Full Multicomponent Diffusion off the Error doesnt appear. Whats the problem here? Well apparently the Diffusionmatrix is singular but why is that?

PS: I left CP, Thermal conductivity and viscosity to be the predefined constant values of the mixture template. ( I think it was air N2 O2 ?)
When using mixing law, mass weighted mixing law and mass weighted mixing law respectively the error disappear.
But shouldnt these parameters not affect the diffusion matrix? It is only governed by mass diffusivity, right?