Error: File '' couldn't be removed (error 2: No such file or directory)
This bug was reported by Byaruhanga Franklin to the mailing lists,


  I also tried with pgsql and pg_restore didn't get any error. i then changed to a lower version of PGADMIN3 1.18 still didn't get any error. i then built the new version 1.22.0 Alpha 2 from the git repository. this also has no error. i guess the problem is limited to only pgAdmin III Version 1.20.0.


Upgrade to PgAdmin3 1.22, or to PgAdmin4.