I created an MSI application object to push Patchlink Agent install.
Under Run Options I selected Run as secure system user. However if the
user on the Windows 2000/XP PC is a regular user the install will fail,
it will succeed if the user is administrator.

I have other MSI application objects that are configured this way that
work fine.(example installation of ZFD 6.5 agent)
Any insight in what might be wrong here?