What version of QT do you have? It is possible that yo jst need to redownload QT to get the newest version which is 6.3 or 6.0.3 or something. Try it then. If it still doesn't work, it may be the CD....

If you're looking to just rotate the right block, you don't really need to parent or group anything. Parenting is used for when you want the right block to move when you move the left block.