Subject Upgrading from 1.5.x to 2.0.5 on Linux - Can't find UDF entry point
Author Stephen Boyd
I have just upgraded my Linux server from 1.5.x to 2.0.5. Now I get an error when I try to use one of my UDFs:

invalid request BLR at offset 90
function GRCIRCLE is not defined
module name or entrypoint could not be found

I have put the shared library into /opt/firebird/UDF. I have set the owner and group to firebird. It has rwxr-xr-x permissions. I have tried a number of different settings in firebird.conf:

The default - Restrict UDF
Uncommenting the default Restrict UDF line to see if it really was the default.
Changing the options to Restrict /opt/firebird/UDF

Nothing seems to work.