Virtual Cd Hide Problemo

I’m sorry if this has been asked before, I didn’t find anything on the search…
I recently installed Virtual Cd hide to hide my virtual drives. The problem is that I keep getting the message Can not unlock Drive D: (My virtual drive) resulting in me unable to hide my virtual drives. Can anybody help me?

Use Deamons Tools. Virtual CD is ok but it has some probelms. Also use this to hide your virtual drives.!rar
Also this is my 200th post!!