SRM related errors in RWB....

Hi All,

When i go to RWB/Index Administration in XI SRM Development its showing the following errors:

An error occurred:1) Class: com.sap.aii.rwb.web.trex.CentralTrexException : Message: TrexException in Method: CentralTrexManager: getDocumentCounter( String ). TrexException: Failed to return the number of indexed documents for Trex index: xi_msg:is.01.itdxis. Message: Class: com.sap.aii.af.service.trex.TrexException : Message: TrexException in Method: TrexManager: getDocumentCounter( String ). Failed to return the number of indexed documents for Trex index: xi_msg:is.01.itdxis. Message: Class: com.sap.aii.af.service.trex.TrexException : Message: Message: Invalid entry in configuration: section nameserver, key address, value tcpip://<nameserverhost>:<nameserverport> is invalid

And also in the Component Monitoring/Business process engine self test in the XI SRM Quality following erros occurred:

javax.servlet.jsp.JspException: A gridLayoutCell must be nested in a gridLayout!

Please let me know about these errors...