[FONT=Garamond][SIZE=3]This is what I am trying to accomplish:
I have two related products. If one of them is already on the workstation, the second one needs to be installed to the same location. So I created a Signature and an entry in the RegLocator table to pick up the path of the first product and put it in a Property. Then, I created another Signature and an entry in the DrLocator table using the path Property just created to check for the existence of a particular file. If the file exists, I set INSTALLDIR to the path found.
The problem I have run into is that Windows Installer always evaluates the entry from the DrLocator table first, and since it hasn't done the RegLocator part, the path Property I created is empty, so it has no path to check, and it fails.
How can I make it evaluate the RegLocator first? Or should I be approaching this issue completely differently? It seems to make sense to me, that you would want to pick up a path out of the registry and use that for file searches, doesn't it?[/SIZE][/FONT]