Greetings, Could somebody shed any light on the error message below that came from trying to call a simple pltcl test function? I am running Postgres 8.1 on WinXP and just recently added the pltcl language by copying Tcl84.dll into my system directory (C:/Windows/System32) and successfully issuing the command: > createlang pltcl -U db_admin postgres What else do I need to do or configure to enable this full functionality? postgres=# create or replace function test_fxn() returns void as $$ postgres$# spi_exec "SELECT * FROM test" postgres$# $$ language pltcl; CREATE FUNCTION postgres=# select test_fxn(); ERROR: could not create "normal" interpreter postgres=# Any help is greatly appreciated and the little that's in the archives/www is fairly abstruse. Thanks, JL