> I'm using FB 1.5, Slackware Linux kernel 2.4.2x and rhe UDFAccess is
> set to ALL

Valid UdfAccess values are None, Full or Restrict.

Do you use:

UdfAccess = ALL

or

UdfAccess = Full

???

Show us that line, please.

I'm using UDFs with FB 1.5 under RH9 without problems,
with the default setting that is:

#UdfAccess = Restrict UDF



HTH,
Thomas Steinmaurer
LogManager Serie - Logging/Auditing Suites supporting
InterBase, Firebird, Advantage Database and MS SQL Server
Upscene Productions
http://www.upscene.com