Getting the following error while running report

[mark123]

Hi,

Can anyone tell me the cause of the following error in cognos while running report
  Found an internal error:
  d != java.lang.String

Thanks

[mark123]

When i am trying to union two queries i am getting the error while running the report with the union query.
Its relational model.

[BigChris]

Have you got any javascript in your report?

[mark123]

no i dont have any javascript

[mark123]

I am getting the same error if i use this query in dataitem

case

when

[PromptDate] <[July 1(current)]
and


[Financial_p].[LOGICAL_COL_TXN--PARTICIPANT].[ACTV_SDU_RCVD_DT] >=[July 1(current-2)]
and
[Financial_p].[LOGICAL_COL_TXN--PARTICIPANT].[ACTV_SDU_RCVD_DT] <  _add_months ( _make_timestamp( ?Year?, ?Month?, 1 ) ,- 11)

then

([Financial_p].[LOGICAL_COL_TXN--PARTICIPANT].[LGC_COLL_TRANS_AMT])



when

[PromptDate] >[July 1(current)]
and


[Financial_p].[LOGICAL_COL_TXN--PARTICIPANT].[ACTV_SDU_RCVD_DT] >=[July 1(current-1)]
and
[Financial_p].[LOGICAL_COL_TXN--PARTICIPANT].[ACTV_SDU_RCVD_DT] <  _add_months ( _make_timestamp( ?Year?, ?Month?, 1 ) ,- 11)

then

([Financial_p].[LOGICAL_COL_TXN--PARTICIPANT].[LGC_COLL_TRANS_AMT])

end