Aladdin advice re StuffIt and Mac OS 9

An Aladdin web page discusses symptoms that may occur (such as windows that do not close) with StuffIt Deluxe 5.5 installed, when running Mac OS 9, if certain needed OS 9 components are missing. These include: AppleShare extension; Multi-User Startup extension; Multiple Users control panel; Security Cert Module; Security Library; Security Manager; Security Policy Manager; and Security Storage Module. "You do not need to turn on File Sharing or Multiple User features in their control panels; you just need the components installed and active."