Cannot apply Barton - Bandis model in latest UDEC version

Greetings,

I am facing trouble on applying the Barton – Bandis model in UDEC 7 latest version (105).

First of all I had trouble on assigning the B-B model in certain set of Joints. I would get the following message:

“Cannot use Barton-Bandis joints with this version of UDEC”

I sort of overcame that issue by using the change command and moving forward by changing constitutive model to 7 (B-B) to the sets that I wished. Although it worked initially now that I am trying to re-apply it going back to the same step (i.e. sav file) I am getting the same message again.

“Cannot use Barton-Bandis joints with this version of UDEC”

Before building the model I have used the respective command for B-B:

“block config barton-bandis”

Finally, I should note that I wish to use both Mohr Coulomb and Barton – Bandis in my analysis.

I am doing something wrong?

Any suggestions would be highly appreciated.

Michael