Downloading CMS Intellicad issues

I downloaded CMS intelliCAD v13 PE and when i go to install it an error pops up saying "a newer version of this application is already installed. Installation cancelled." I have not installed this application before and I have checked every file and area of my hard drive to no avail. Does anyone know why this issue is happening or has anyone else experienced this?

I've seen that other CAD programs can interfere but that shouldn't be. I can install my other CAD software temporarily if that will allow me to install IntelliCAD but that is my last resort. I also don't know if that would solve the issue and I need those other softwares installed too so I'd have to reinstall eventually.

I haven't gotten any help from their support team or forum.