"Cannot create Toolbar" error when you enable Quick Launch

When you try to enable the Quick Launch or the Desktop bar, you may get the error "Cannot create Toolbar". This might happen if the Quick Launch folder is missing in this location:
%Appdata%\Microsoft\Internet Explorer\Quick Launch
Resolution:-
To resolve the problem, type this command from Start, Run dialog:
IE4UINIT.EXE
The above command creates the Quick Launch folder automatically, if it is missing in the above location. Now, try to enable the Quick Launch bar. If the problem persists, run the following command:
REGSVR32 /i SHELL32.DLL