Problem related to the Error: General-car-0cdr
 

Hi, EVERYBODY!! When I try to set an orthogonal thermal conductivity by udf in the material panel, I get a Message: Error: GENERAL-CAR-CDR: invalid argument [1]: improper list Error Object: #f It seems that it doesn't cause me any trouble to continue....but the results is not correct.

Furthermore, if I set the conductivity by a given number or set an isotropy conductivity instead of the orthogonal one by the udf, there is no problem.

Does anybody know how can i deal with the error and get the correct results? Thanks. Wei Wang