I have previously run SE ST7. Tried installing ST8 today and it will not install as "There is a version of Solid Edge on my system".
Tried to uninstall ST7 using Uninstall in control panel but the .msi was not found. In the end deleted every reference and folder of ST7 including in the registry. Removed old installation version from Network, Cleaned system with JV16 Power Tools. ST8 will still not install.