How do you install the FIFA 12 Demo with FIFA 11 also installed?

Question

I just downloaded the FIFA 12 Demo, but when I start the Autorun.exe I only get a play button, none for installation. If I click it, the FIFA 11 startup menu comes up.

If I start EASetup.exe, it says the game already is installed.

Any way to fix this?

For clarification: I have FIFA 11 installed and I am looking for a way to get the FIFA 12 Demo installed without uninstalling FIFA 11.

This seems to be a general issue with the demo, I found a german article on the web pointing out this issue as well. What I want to know is if there is a workaround to get the demo installed anyway.

Answer

I now found a solution in this news article (german):

If you remove the following registry key

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Installer\UserData\S-1-5-18\Products\1DC6AEF331AE7EC47AE47AA4A4A0B7C5

you are able to install the demo while Fifa 11 stays installed.

You should make a backup though, so that you still can uninstall Fifa 11 properly later.

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