Problem using Slony-I with pgadmin 1.6.2

Hi,

I'm using pgadmin3-1.6.2, slony1-1.1.5 with PostgreSQL 8.2.5 on SL4.  I
installed thru RPMs.
And when I tried to do replication and create node cluster, I saw 'Slony-I
creation scripts not available; only joining possible.' at the status bar.
I'd like to know what's the problem and is there a way to fix it?
Thank you.

Kandy