Datasource Creation Error

[aryanhanda]

Hi,
I have vista Operating System and have installed Oracle 10g client.I have successfully installed cognos 8.2  and all services are running correctly.I am trying to create datasource for sample packages (i.e gosales,goretailers..) in cognos connection-->Datasources.Below is my connection string:
Connection string: 
^User ID:^?Password:;LOCAL;OR;ORACLE@%s@navy/%s@COLSEQ=

After clicking on test buttion I am getting following error message:-

RSV-AOM-0025 The property 'formFieldVar:format' of type 'bus:formatEnum' cannot be set to a value of type 'xs:string'.

Can anyone pls help me to resolve this error..
I repeat in cognos configuration all services are working fine.No errors reported..