Custom install feature is not working for the Windows user with limited (+elevated) priviledges.

Steps to reproduce:
1. create a user account with limited priviledges
2. give that user elevated priviledges by following these instructions:

From an Administrator-level login, run the Microsoft Management Console --
1. Start, Run, MMC.EXE
2. Click File, Add/Remove Snap-in
3. Click Add...
4. Select: Local Users and Groups, Click Add
5. Click Finish
 
Run Group Policy Edit --
1. Start, Run, GPEDIT.MSC
2. Expand the tree on the left to see
Computer Configuration\Administrative Templates\Windows Components\Windows Installer
3. Double-click "Always install with Elevated Privileges"; choose Enable, OK
4. Double-click "Enable user to use media source while elevated"; choose Enable, OK
5. Expand the tree to see
User Configuration\Administrative Templates\Windows Components\Windows Installer
6. Double-click "Always install with Elevated Privileges"; choose Enable, OK.
7. File, Exit.

Now try to install the jre6.0 and jdk6.0 as a non administator. During installation try to specify installation dir (use a custom install option: C:\jre1.6.0), but it will install it in default location under Program Files\Java
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