> Is your query RequestLive set to true? And ReadOnly to false? Or, if
> there is a join in the select, are you providing keylinks and
> Keyrelation values?

RequestLive was false, so I set it to true - still no joy. I've
tracked it down to an error in the query's UpdateSQL, which caused a
dozen exceptions to be thrown and silently caught.

Note to self: check error log before posting.

Thanks for your help.

David