What makes u say that 'Vivado knows where the project files are?'. Do you find the project in the recent files in vivado.
The tool was broken due to the space in my path name. I fixed the path. I could then uninstall. Then the reinstall would work. I've tried CC cleaner I've also searched the registry, and there are no instances that are not...
This modification will break the certification of the Windows driver so you have to boot with disable driver signature enforcement in order to install the driver. Then you should be able to connect with FT_Prog to your device to change the VID/PID back. Uninstall the driver with delete...