Emulator Problem: VBA Help - Image not found

Whenever I turn on the emulator (whatever version), I get an error message saying that an image wasn't found. Then it just stops working and the emulator window turns black.

I really need help with this problem. Emulators used to work on this computer and now it just doesn't respond. I tried to clean out my computer and organize everything (CCleaner, Defraggler) but it still doesn't work. Thank you very much for your time and help.

This could be a virus.One time i had the same problem.All i did was scan my PC for viruses (There were 65+ viruses one of them was a trojan).I used Avast antivirus.
if this helped you please reply with a full description of your problem,your pc specs,what windows are you using etc.

This does sound like a virus, have you noticed any change in any other programs you use, or any change in CPU intensity?