windows cannot access specified device, path or file...

Hi,
I have a brand new Windows 7 ultimate edition (x64) installed with AVG antivirus. I have an exe file that gives me the classical "windows cannot access the specified...." and when I highlight the item I get an AVG warning about the file beeing a trojan horse. I cannot even move or copy the file.
I tried the file on an other computer with XP on it along with nod32 antivirus. The file is not a trojan horse and it runs normally. I tried on the windows 7 to take property of the file, it is not blocked so I can't unblock, it is located on my desktop.
I am not sure if I have to uninstall my antivirus, but it's not easy for me to install it again, it will take a lot of time etc.. so I am leaving this option to the end in case someone may be sure what the problem is. Anyway my problem isn't the virus notification but the windows alert
I would apreciate the help
Thanks
Kam

 

can you add it to the exceptions list in avg? are you sure it's not a trojan?

 

Excellent!
Oce I added it to the exceptions, it worked
Thank you very much
cheers!