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Joule heating and PDE interface - Error: Failed to find consistent initial values. Last time step is not converged.

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Hi All.

I am using v.4.1 and the Joule-heating and PDE-general form interfaces for a time-dependent study. I want to use joule-heating to solve for temperature evolution vs. time, as well as the PDE interface to solve for grain growth and densification vs. time. (I have defined the diff. eqs. for grain growth (G) and densification (P) using PDE-general interface because the ODE interface is not compatible with spatially distributed variable, T) I've attached my model below. I keep getting the above error message when solving. I have tried attempting the various solutions listed in the forum (such as increasing tolerance, refining mesh, changing boundary conditions) with no success.

Any help would be much appreciated.
Thanks very much!
Nick

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