Could not open key: UNKNOWN\Installer\Products\9B00314CD581E574FBCE93FE37F2911B\SourceList\Media. Verify that you have sufficient access to that key, or contact your support personnel.

Fixed !

Start>Run put regedit and press Ok.

1. Go to the key: HKEY_CLASSES_ROOT\Installer\Products\9B00314CD581E574FBCE93FE37F2911B\SourceLis t\Media

2. Right click in Media folder, select Permissions from the menu.

3. You will see that is no user, on the "Permissions for..." dialog box which appears next, press the "Add.." button and add in the "All"

4. Back on the first "Permissions for..." dialog box, click on each account in the top-list and make sure each has the "Full Control = Allow" and "Read = Allow" permissions

5. Click the "Advanced" button and the "Advanced Security Settings" dialog box appears

6. On the "Permissions tab" enable the checkmark box named "Replace all child object permissions with inheritable permissions from this object", then press the "Apply" button

7. On the "Owner" tab, highlight the "Administrators" name in the lower listbox, enable the checkmark box called "Replace owner on subcontainers and objects" and press the "Apply Button"

In my case, many errors appear before, but i fixing 1 by 1 and installation completed. Try and tell me later.