No, the window does not open I just get the error message.  Yes, when I hit google.html I do get a map of the UK.  My firewall is turned off.

I am receiving the error message when I try to load the program.  It has installed (at least it has a folder with all the files in it) but when I hit the Plan G.exe is when I get the error message.

I am using Windows XP Sp3 and yes there is a log file:

21:28:59 FS9 is installed
21:28:59 FSX is installed
21:28:59 FSX database is built
21:28:59 Selected data set is FSX
21:29:04 Starting map
21:29:05 Initialisation complete.

Yes, .Net 3.5 SP1 is installed on my system.

I just downloaded Plan-G placed the folder in my C:\ drive and got the following error message:
"Application has generated an exception that could not be handled"

        Process ID=0x8c8 (2248), Thread ID=0x12cc (4812)

Not sure what all this means but is there something I am doing wrong?  Thanks you.