This is the error I'm getting:

This operation is not defined for system tables.
unsuccessful metadata update.
key size too big for index STRINGS_IDX1.

My table is called "STRINGS", is this the problem?
Maybe it conflicts with system tables in Firebird?
If it is so, why on earth then doesn't it report
problems for generators and other things defined?

Otherwise, where could my problem possibly be?

TIA,

Andrew