PowerIso Virtual Drive error message

Hello Everyone,
I am using poweriso 4.4 and 4.5 on my system.
Few days the program worked fine but recently I am having some problem and it shows an error message “PowerIso Virtual Drive is not Installed correctly please reinstall it”.
I attempted to uninstall and re-installed it but nothing happened.
Can someone help me fix this error?
Thank you in Advance.
