Yep, tried that. Still won't work. HowsDat was working fine when I first got the computer, but I had compatibility issues with a program (iTunes) I was using and had to reboot from scratch...then updated Windows 7 and it added Microsoft .NET Framework 4.
I've tried it with Framework 4 installed and unistalled with the same result...comes up with the message that Microsoft is trying to find a solution to the problem...
The only thing I can think of is that an earlier version of .NET was installed which allowed me to use HowsDat and a newer version won't for some reason. I don't know what .NET version was installed prior to Windows update...