PowerVR Graphics SDK v3.2 install fails on Windows 7

The install fails during install of the SDK v3.2.

It fails at where installation window says

"Unpacking C:Imaginat[...]torGUIWindows_x86_32PVRshaderEditorGUI.exe"

and the error window says
"There has been an error. Adebug file has been created....."

I have tried deleting .bitrock folder and PAK files

but still failed. I do I get this done?

For the benefit of anyone else reading - the issue is now being tracked in our Feedback system: https://pvrsupport.imgtec.com/feedback/view/29-powervr-graphics-sdk-v3-2-install-fails-on-windows-7