ShockWave needs the Zero hour updated to at least version 1.

If you have any further technical issues feel free to contact us at the support forum. Zero Hour - Shockwave Mod Install Guide Origin

This mostly happens on Zero hour on which other mods have been installed previously. Drop us a line in a pm or mail showing some of your work and tell us why you'd like to help this mod. You need to ask us what you want to use you can contact us via a pm or mail details can be found in our profiles on the staff page of this site or the forum. We are no longer accepting ideas for the mod as ShockWave has matured to the point in development where there is little room that they can fit in. Yes the new launcher was tested and confirmed to be working with vista. Yes, ShockWave comes along with a launcher which allows you to switch between Zero hour and ShockWave so you enjoy both at the Same time. You can also contact people on the forum to arrange online games. But you need to find other players who also have ShockWave to play with. You have 10 seconds to leave before the hounds get to you.

Generals zero hour shockwave