Error Table header value not found for key

Error Table header value not found for key

Under Admin ->Support Groups, when I try to click on one of the group it gives below:

HTTP Status 500 -


type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545) org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486) org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274) org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507) 
=========================
Once I look at the logs it shows below:
=========================
[01:43:10:842]|[06-28-2013]|[com.adventnet.servicedesk.cmdb.action.CIRelationshipViewController]|[INFO]|[49]|: Fetching select query called.|
[01:43:10:842]|[06-28-2013]|[com.adventnet.servicedesk.cmdb.action.RelCheckBoxTransformer]|[INFO]|[49]|:  Error !!!. Table header value not found for key -  |
[01:43:10:842]|[06-28-2013]|[SYSOUT]|[INFO]|[49]|: java.lang.NumberFormatException: For input string: "null"|
[01:43:10:842]|[06-28-2013]|[SYSOUT]|[INFO]|[49]|:  at java.lang.NumberFormatException.forInputString(Unknown Source)|
[01:43:10:842]|[06-28-2013]|[SYSOUT]|[INFO]|[49]|:  at java.lang.Long.parseLong(Unknown Source)|
[01:43:10:842]|[06-28-2013]|[SYSOUT]|[INFO]|[49]|:  at java.lang.Long.valueOf(Unknown Source)|




 
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So any idea what Table header value not there or how to resolve this?
 
Kind Regards

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