Zero thickness cohesive zone with curvature

Hi everyone:

   I am henry, a graduate student in USA. These days, I am trying to make a zero thickness cohesive zone with curvature. After I define this and get everyting set up, then submit the job, the warning windows pop out and tell me the following error messages:

The node numbering might not be correct for element 2010 instance cohesive-1

The node numbering might not be correct for element 2010 instance cohesive-1

The node numbering might not be correct for element 2029 instance cohesive-1