I've installed Firebird 1.5.2 and I'm having trouble using the
standard ib_udf.dll.

I executed the commands in ib_udf.sql via bin\isql.exe ... -i, and I
tried setting "UdfAccess = Restrict UDF" in firebird.conf, but
whenever I try to acess the UDF 'LOWER', I get:

Access to UDF library "ib_udf.DLL" is denied by server administrator.

It's been suggested that I set useStandardUdf - is that set in
firebird.conf like "useStandardUdf = 1" ? I've tried that but it
doesn't seem to change anything.

Could I be screwing up the creation of the database itself? All I
did was this:

> bin\isql -user sysdba -password masterkey

SQL> create database 'test.gdb' user 'sysdba' password 'masterkey';
SQL> quit;

-Jeff