iphone 5 ios 8 using "Photo Transfer App Lite" won't discover the app on windows 7 64bit

I have just installed the Photo Transfer App from your web site onto my HP G61 laptop using a Netgear FR114P Router going through a Netgear WG302 Wireless Access Point. I'm running Windows 7 64 bit. I have gone through all the connection troubleshooting tips, rebooting the router, making sure they're on the same network, trying several times etc etc. I have the latest Adobe Air installed (uninstalled and reinstalled just in case). I have tried everything but to no avail. I've searched the Community Help for quite a while, but can't find an answer.

With the app open on the laptop, when I try to "Receive Photos" and then tap the "Windows" button on the next screen on the IPhone, it just tells me to "Run 'Photo Transfer App' on your Computer". It will not find my laptop. It works when I "Use Web Browser" and do it manually but there are other (free) apps that will do that. What is the problem?