You may encounter the following error on installation:

Installation ended prematurely because of an error

when trying to install 32-bit or 64-bit qlikView on Windows 7. With or without UAC (User Access Control), installation fails.

Suggestions to (re-)install vbscript.dll using regsvr32 vbscript.dll in the c:\windows\system32 (64-bit equivalent) directory didn’t help.
On execution of the installer, c:\program files\common files\wise installation wizard has a new msi added that includes the full installer for the qlikView application.

Installation worked by opening your command window (Start -> (All Programs) -> Accessories ->Command Prompt (right-click and run as Administrator) by calling the msi, above, with a few switches:

msiexec /a WISB3[...].msi

That worked.
The command-line registry fix as below
reg delete "HKCU\SOFTWARE\Classes\CLSID\{B54F3741-5B07-11CF-A4B0-00AA004A55E8}" /f
didn’t do anything…