I'm running Spyware Terminator & PC Tools Firewall Plus, they didn't block my download of WinPatrol. Maybe SpySweeper.
Check your configurations in your security programs.
Try downloading WinPatrol with Opera. Sometimes Firefox would give me trouble downloading stuff. That was one of several reasons I switched to Opera.
Do you really need both SpySweeper & Spyware Terminator? On-demand scans with SAS free & AVG AS free show ST does an excellent job, I'm spyware/malware free.
Two real-time anti-spywares have the potential to conflict. Maybe that's your problem???