Dear Stephan ,
> Is 20071 the oid of the function in question?
Yes, as from the error message. It is quite surprising.
> Can you give a standalone example that gives the error?
After updating a PLpgSQL function of a trigger on table foo with CREATE OR
REPLACE using latest version of pgAdmin2.
If I run "UPDATE TABLE foo SET foo_timestamp = 'now' WHERE .... sql clause"
will return an error. It seems to be a migration problem.
Cheers,
Jean-Michel