Try downloading Quicktime and then installing it. This might do the trick, as it seems that you might be pulling the install from a shortcut of sorts (where it can't find the target).
What Adobe products are you using? Just AE? I've seen where I've had to uninstall and reinstall Adobe products to get them to work correctly with things. Worst case scenario (sort of) is that you'd have to uninstall Adobe products, install Quicktime, then reinstall the Adobe products.
Let me know if it works, and we'll go from there.
War produces veterans, wounded both physically and mentally. They have sacrificed for us.....and it is now our job to help these veterans, as they have already helped us in ways we will never know, in ways that we cannot fathom, and in ways that we take granted every day.