Odd problem with Installing a VB6 app without as admin using INNO setup.

Hi there everyone. I am working on an installer in inno setup. The actual prog is made in VB6, I have used INNO setup for years without this problem, but what happens is when the VB6 prog is launched, it checks a txtfile to see if the file has the registration key, and if not then, shows the buy/register button. When I just run the program without being installed, it runs as it should, when I make it with the inno setup and run it as admin it runs as it should, but IF I install it with inno setup without admin, then when I go to launch the app, it runs as if it were registered, even though the textfile it checks to see if the right key is there, but it is empty, which is what it is suposed to be before a user registers it. But the program for some reason will run as if it were. See it first loads the textfile to a textbox, checks for the key, and if the key is right, then the buy button is invisible, but if it is not registered, then the buy button is shown.

Like I said, the program runs as if it already has the right key. Has anyone come across this? How can I solve this GHOST registration. But I want to keep using INNO setup as I have never ran across this before, I am using Windows 8.

Thanks!