Print Shop is a program I deleted recently both through an Uninstall and a cleaning up of its registry settings using jv16 Power Tools. Up to this deletion, Blocklist Mgr would open normally.
To get rid of this oddity, I completely deleted Blocklist Mgr (including its registry settings) and re-installed : same thing.
I re-installed Windows installer 3.1 (v2). No change.
I have Ad-Watch and PestPatrol. Ad-Aware and SpyBot found no spywares. Avast found no virus.
Windows Installer works properly as I can install any program without a hitch.
I don’t see the link between Print Shop and Blocklist Manager.