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
The node numbering might not be correct for element 2029 instance cohesive-1
The node numbering might not be correct for element 2030 instance cohesive-1
The node numbering might not be correct for element 2030 instance cohesive-1
The node numbering might not be correct for element 2032 instance cohesive-1
The node numbering might not be correct for element 2032 instance cohesive-1
The node numbering might not be correct for element 2033 instance cohesive-1
The node numbering might not be correct for element 2033 instance cohesive-1
The node numbering might not be correct for element 2034 instance cohesive-1
The node numbering might not be correct for element 2034 instance cohesive-1
The node numbering might not be correct for element 2036 instance cohesive-1
The node numbering might not be correct for element 2036 instance cohesive-1
The node numbering might not be correct for element 2037 instance cohesive-1
The node numbering might not be correct for element 2037 instance cohesive-1
The node numbering might not be correct for element 2043 instance cohesive-1
The node numbering might not be correct for element 2043 instance cohesive-1
The node numbering might not be correct for element 2044 instance cohesive-1
The node numbering might not be correct for element 2044 instance cohesive-1
The node numbering might not be correct for element 2052 instance cohesive-1
The node numbering might not be correct for element 2052 instance cohesive-1
The node numbering might not be correct for element 2053 instance cohesive-1
The node numbering might not be correct for element 2053 instance cohesive-1
The node numbering might not be correct for element 2057 instance cohesive-1
The node numbering might not be correct for element 2057 instance cohesive-1
The node numbering might not be correct for element 2058 instance cohesive-1
The node numbering might not be correct for element 2058 instance cohesive-1
The node numbering might not be correct for element 2060 instance cohesive-1
The node numbering might not be correct for element 2060 instance cohesive-1
The node numbering might not be correct for element 2061 instance cohesive-1
The node numbering might not be correct for element 2061 instance cohesive-1
The node numbering might not be correct for element 2065 instance cohesive-1
The node numbering might not be correct for element 2065 instance cohesive-1
The node numbering might not be correct for element 2066 instance cohesive-1
The node numbering might not be correct for element 2066 instance cohesive-1
The node numbering might not be correct for element 2068 instance cohesive-1
The node numbering might not be correct for element 2068 instance cohesive-1
The node numbering might not be correct for element 2069 instance cohesive-1
The node numbering might not be correct for element 2069 instance cohesive-1
The node numbering might not be correct for element 2072 instance cohesive-1
The node numbering might not be correct for element 2072 instance cohesive-1
The node numbering might not be correct for element 2073 instance cohesive-1
The node numbering might not be correct for element 2073 instance cohesive-1
The node numbering might not be correct for element 2074 instance cohesive-1
The node numbering might not be correct for element 2074 instance cohesive-1
The node numbering might not be correct for element 2080 instance cohesive-1
The node numbering might not be correct for element 2080 instance cohesive-1
The node numbering might not be correct for element 2088 instance cohesive-1
The node numbering might not be correct for element 2088 instance cohesive-1
Error message limit reached. No further error messages will be reported.
Please see the dat file for more errors.
Analysis Input File Processor exited with an error.
    How to solve this problem and what is this problem? Could anybody tell me the way to make a zero thickness cohesive zone with curvature?
    Attached is figure where I indicate the location of the cohesive zone.
    Appreciate everyone.
Regards.
Henry.