When you attempt to add the Quick Launch toolbar to the Task Bar, you receive:

Cannot create toolbar for "

The behavior will occur if the Quick Launch folder has been deleted.

To resolve the problem:

1. Open a CMD.EXE window.

2. Type the following command and press Enter:

MD "%USERPROFILE%\Application Data\Microsoft\Internet Explorer\Quick Launch"

NOTE: See How do I re-create the Show Desktop icon on my Quick Launch toolbar?