FHSQL in BI 4.1 SP6

Hi all,

I have installed BI 4.1 SP6 Patch 2, I created a report based on  FHSQL. When I create the report all works fine, but if I try to add a column to my query this is executed without error but when I insert the new column to the report I obtain an error ERR WIJ 20003

com.businessobjects.sdk.core.exception.common.IllegalArgumentException: [IllegalArgumentException] <pageIndex> (Error: RWI 00011)

  at com.businessobjects.sdk.core.exception.ExceptionBuilder.make(ExceptionBuilder.java:152)

  at com.businessobjects.sdk.core.exception.ExceptionBuilder.make(ExceptionBuilder.java:92)

.....

Somebody else has encountered this issue?

Regards,

Laura