Virtual drive Problem with Win 7

[sinoop_joy]

I have Win 7 x64.
I was using Alcohol 120 and it was working fine for me. But now no virtual drive emulation s/w are working.
I tried Power ISO,Daemon Tools Lite(said for Win 7) and Magic Disc.
Now only Magic disc is working.
Others say there is some problem with installing driver. Any idea to solve this ?

[A.Jesin]

Please post a screenshot of the error you encounter