> Hello Roman, thank for the speedy and informative reply. I don't know how to implement solution a) so I steadily increased the following firebird.conf file setting using the KB to bytes conversion table at the bottom of: firebird.conf until I reached the max. The install.log snippet also follows. TIA and please advise, David.

Wrong. Cache has nothing to do here - please set it to its default
value. You have to specify the database page size. If you create
database via isql it looks like this:

CREATE DATABASE 'localhost:c:/path/to/db.fdb'
USER 'sysdba'
PASSWORD 'masterkey'
CHARACTER_SET 'WIN1252'
PAGE_SIZE 16384;

Roman