PDFC Launches MSI to install Quickbooks?

I uninstalled Quickbooks months ago. Every time I launch PDFCreator, MSI dialog box  tries to install Quickbooks. 5 times/cancel/cancel/ etc. . total waste of time.

Tried uninstalling and resintalling, used Ccleaner on registry... still calls for QB.

I called QB tech, said its 3rd party software, ask you guys. Other than that, it works fine.

running Windows XP / Firefox