Please make sure the [System Connection] Section has the correct values ie. "1=ag3JavaBE.dll" Also, the full section for each line i.e "[Java-1].
If you change the file manual you will need to restart the whole SMP 2.3 server. (note if you are using an SMP 2.3 Clustered server, you will need to update the files outside of the server then zip it and redeploy to the server.
Stephen