Version 3 had *most* configuration things pre-compiled. e.g. "%{sql: SELECT .. %{User-Name} ...}" would check that the "sql" module existed, and the User-Name attribute existed. This worked for everything except regular expressions. I've just pushed a minor change which fixes that: if (User-Name =~ /%{Blah-Blah}/) { ... is now an error. The server will refuse to start, and will print out a descriptive error message. Alan DeKok.