BUG #4891: postgresql-8.3-604.jdbc4.jar - failed to load manifest

The following bug has been logged online:

Bug reference:      4891
Logged by:          Jonathan Camilleri
Email address:      camilleri.jon@gmail.com
PostgreSQL version: 8.3
Operating system:   Windows Server 2008
Description:        postgresql-8.3-604.jdbc4.jar - failed to load manifest
Details:

Downloaded http://jdbc.postgresql.org/download/postgresql-8.3-604.jdbc4.jar,
and, ran the following command:

>java -jar postgresql-8.3-604.jdbc4.jar
Failed to load Main-Class manifest attribute from
postgresql-8.3-604.jdbc4.jar

>java -version
java version "1.6.0_14"
Java(TM) SE Runtime Environment (build 1.6.0_14-b08)
Java HotSpot(TM) 64-Bit Server VM (build 14.0-b16, mixed mode)

>winver