SQL0518 - Prepared statement not found ?

[sjk]

Hi,

I have numerous pivot table spreadsheets all taking data directly fro
our IBM AS/400 via Client Access ODBC connection.

With just one of the workbooks i cannot get back into query manager t
edit the query (although data will still refresh ok !)

Each time i try to edit i recieve :

[IBM][Client Access Express ODBC Driver (32-bit)][DB/400 SQL]SQL0518
Prepared statement 0000000064 not found.

Anyone have any idea what causes this and how to get round the proble
??

Many thank