Windows 7 - Windows Live Essentials - not working?

Hi...
I'm relatively new to Win 7 Home Premium (64-bit) and have just discovered it doesn't include Windows Movie Maker which was on XP.
However, I noticed online Windows Movie Maker 2.6 is supposed to work with the above.
It downloaded fine but when I went into 'All Programs' and clicked on Windows Movie Maker, nothing happened.
I noticed also the icon next to it was a blank one and not a 'Windows' one.
Checking Add/Remove (I actually use Revo) the program was definitely installed.
Nevertheless, I uninstalled then reinstalled. No joy. I then uninstalled it completely.
I then noticed Windows Live Essentials contains the Movie Maker.
I selected only the 'Photo & Movie Maker' from the list and downloaded.
However, the same thing happened as with Windows Movie Maker 2.6. Also, same blank icon.
I must be missing something simple here.
Can anyone help?
Many thanks

Hello kwil

I have movie maker 2.6 installed and running fine here (same OS) and have the live essentials version also, what is strange is your having problems with other newly installed programs also. Where did you get the download from - Download: Windows Movie Maker 2.6 - Microsoft Download Center - Download Details
Any other recent problems installing programs.
Maybe a quick SFC scan and malware scan also for starters - SFC /SCANNOW Command - System File Checker

Danny

Hi Danny...thanks for taking time to reply. Downloaded all from Microsoft site No problems malware or SFC or other recent downloads. Any other ideas? Many thanks