rtutils.dll error messages

I was recently infected with the Personal Antivirus virus.  I removed it but now I keep getting error messages that state the that a .exe operation was unable to be located because the rtutils.dll was not found.  I have downloaded programs (CCleaner and others) that say they can fix the problem but has not done so. I have updated all virus and microsoft updates and nothing works.  Can anyone help with this problem

Example:  pcts Tray.exe unable to locate ( rtutils.dll not found, reinstalling the program may fix the problem)  as I said I get this type of message everytime I try to open any program, even when I switch my email accounts.