Autodesk Simulation Moldflow Insight

[#1]

I have a 2 shot overmolding part and the analyze stops after a couple of seconds with this error:

** ERROR 702626 ** The model is not oriented properly for a Dual Domain analysis.

Please correct the element orientation.

This error number is not listed in the help function

The orientation check gives no mistakes and "orient all" was done. Even the mesh statistic shows no unoriented elements:

Entity counts:
    Triangles:        8738
    Connected Nodes:        4367
    Connectivity regions  2

Area:
    Surface Area:  240.637 cm^2

Volume:
    Triangle:  27.6382 cm^3

Aspect Ratio:
                  Max    Average    Min
                 16.1      2.67     1.16

Edge details:
    Free edges    0
    Manifold edges   13107
    Non-manifold edges   0

Orientation details:
    Elements not oriented  0

Intersection details:
    Element intersections  0
    Fully overlapping elements  0

Match percentage:
    Match percentage   87.6%
    Reciprocal percentage  89.0%

I really don't know what to do.

Thanks in advance for your help