Meshing error from ICEM
 

Hi

Im using ICEM to mesh an object. I used blocking for hexa meshing and when I convert the pre-mesh to unstructured mesh, there was no error from ICEM. When I import into FLUENT, it has the following error:

Build grid:abort due to critical error

Building mesh: cell centroid is xc 1215.78 yc=-15.85 zc=-180.79
Warning:no face with given nodes Thread 12 cell 423095

Any advise on how to resolve this error? I check the cell, it doesnt seems wrong.