Hi Sven,
Sorry for the late replay, we have checked and it is a bug in pgAdmin because the name of the sql files got changed in new slony version ( v2.2.0 ) which is used by the pgAdmin.
Issue :-
When we install the slony ( version less than 2.2.0 ) then it will install below sql files in C:\Program Files\PostgreSQL\9.3\share folder.
slony1_base.sql
slony1_base.v83.sql
slony1_base.v84.sql
slony1_funcs.sql
slony1_funcs.v83.sql
slony1_funcs.v84.sql
Now in New version of slony 2.2.0 onwards the name of the above sql files got changed as below.
slony1_base.2.2.0.sql
slony1_base.v83.2.2.0.sql
slony1_base.v84.2.2.0.sql
slony1_funcs.2.2.0.sql
slony1_funcs.v83.2.2.0.sql
slony1_funcs.v84.2.2.0.sql
As we are using above sql files names in pgAdmin to create the new slony clusters so we need to change in pgAdmin also.
We are working on this issue and submit the patch once its done.
Thanks,
Neel Patel