per-user extensions are not loaded in Visual Studio

Hi

I have implemented one setup/install program which will install some extensions and project templates.

Issue is :

I am able to see project templates ,but Per-user extensions  are not visble in Visual stuio 2010/2012.

I would like to provied below information for help:

1)I verified extensions folder in AppData\Local\Microsoft\VisualStudio\10.0\Extensions.It is avilable (UserExtensionsRootFolder)

2) If i copy my extensions to ApplicationExtensionsFolder , i.e "Microsoft Visual Studio \Common7\IDE\Extensions", i can able to see  and it is working as expected.But i dont want this, i dont want to copy my extensions in to "ApplicationExtensionsFolder ".

3)I refered two useful articles on installers

How VSIX extensions are discovered and loaded in VS 2010

Managing Extensions and Updates

4) I vefied some settings in visual studio

Tools / Options, Environment, Extensions and Updates

Thanks

Showkath

Best Regards Showkath