PgAdmin rc-1 Version Backup Errors

When trying to specify a folder (using browse)for the db backup file,
PgAdiminb4 rc-1 shows the folders on my "C" drive (Windows 10) and it cannot
be changed.



Also, I get a version mismatch on the 'pg_dump' routine.  Here's the error:
"pg_dump server version 9.6 beta3, pg_dump version 8.45.  Aborting due to
mismatch."



Also. Rhe rc-1 version of PgAgent 4 prompts for Binary file path settings in
"preferences" when the beta3 version did not.  I don't know what to enter in
these fields.