Unknown error previous installation detected

Hi Professionals,
When I try to install DAZ Studio, I was stuck up with an error message. Means I uninstall the old version DAZ Studio 4.5 from the computer and I install the latest version. This popup is not allowing me to install the new version. To my knowledge, I completely uninstall the old one. I can’t understand why it is showing an error. Please help me resolve this error. Thanks.

There has an error.
Unknown error while running C:Program filesDAZ #DDAZstudio4_Win64.exe—mode unattended –unattendedmodeuiminimalWithDialogs
The application will exit now.
