[THEBERBSTER]

Hi k
The first thing to do now is to uninstall from the control panel SH5 and the Ubisoft game launcher.
Post #70 How To Use The Free Registry Cleaner 'Ccleaner' > Includes Download Link
Use the free Registry cleaner and then re-boot your system.
I install from a dvd, you are installing from a download which should not be a problem as many do this.
You should see an option to start the download from your seller, this may take some time depending on your system and routers capability.
towards the end of the installation you will see an error regarding your gpu card which can be ignored, just press the prompt key to continue.
Once the download has completed exit any open screens.
Follow this tutorial.
Post #5 Update SH5 From v1.0.5.0 To v1.2.0 Immediately After Installing
When the update is completed it will take you to the Uplay login screen so you can enter the necessary details.
Peter