[SOLVED] Activation WP Security Scan shuts down Page Block plugin

I've only had this problem since updating the plugins and WP to their current versions. I've check the plugins one at a time and isolated this situation. WP Security Scan deactivated and the Page Block plugin works fine on all pages. Activate WP Security Scan and it shuts down Page Block.

I am not techie oriented and have no idea what to do. Should I delete and reinstall the Security Scan? Please share you insight and suggestions. This same situation occurs even when I switch to the default theme. I don't know what to do or should I get a new security plugin? I really like both plugins and need them.

My WP version is 2.9.2, Atahualpa version is 3.4.3, Firefox browser, Windows XP Media Center SP3.

Thank you,
Craig