Thanks for all your advice.
I will make the appropriate changes.
I will track down the runtime browser.

A couple of comments (and I am trying to be helpful not contentious).
1. not withstanding your comment, I do get data back from the SQL
select in the TIB_DSQL.

2. I re-visited both TIB_Statement and TIB_DSQL in the help file and
saw no caveat about using SELECT.
Highlights
TIB_Statement
It handles all of the necessary API calls to allocate, prepare and
execute an InterBase dynamic SQL (DSQL) statement.
Does that mean that SELECT is not a statement?

TIB_DSQL
This component is used for all InterBase DSQL statements that do not
involve the handling of multiple rows of output data.

Note the use of "all" in both items.

A couple of extra lines in the help file might prevent someone from
following in my footsteps.

Thanks again,
Clive.