can't open case in fluent 13
 

Hello
I built 3 different meshes using Gambit. loaded the first mesh, and then attached the others to it using : mesh->zone-> append case file (found this tip on this forum somewhere)

I used "mesh interfaces" to create the interface between the different meshes, saved my case, and ran calculations as usual.

When I come to reopen the case, I get this error message:

Error: CDR: invalid argument [1]: wrong type [not a pair]
Error Object: #f
Note: zone-surface: cannot create surface from sliding interface zone.
Creating empty surface.

the mesh is loaded, but almost every option in the menu is blocked(including mesh interfaces), and I can't continue.:confused:

What am I doing wrong?
thank you

recreate the case file from 3 gambit mesh files.