Watch Dog Will Not Install.

If you conitnue to get this error then the best thing that you can do is uninstall the game and then reinstall it. Sometimes when you are installing games something can go wrong and then the game does not work.

Here are some intructions to follow if you got the game from steam

Re-install the game and check the cache through Steam:

1. Put the game folder (steamapps/common) and paste anywhere else on your hard drive and give it a different name.
2. Delete the contents of the game from your Steam profile.
3. Put the game folder back to its original destination and rename it to “Watch_Dogs” again.
4. Re-install the game at Steam. After this additional 1.2 Gbytes will appear in the game folder.

Try it and let me know what happens.