When I run the installer, it runs, shows a box which says "Extracting files" and when that completes, the box closes. For a very short time, a black box appears with a white buffer symbol in it, then it goes instantly and there is no trace of the installer apart from in Task Manager, where I have tried to close the installer and run it again. I have tried restarting my computer, running in administrator mode and running in compatibility mode.

Any help would be appreciated! :)