[Atrocities]

Try this.

Unzip the Planet Pack and install it into your base SEIV pictures directory.

If should ask to overwrite one or more files. If it does not, then you may be trying to install it into the incorrect location.

SpaceEmpiresIV/Pictures
Under the Pictures folder there are several sub folders
Races
Game
Combat
Planets
Facilities
Components

When installing the Image Mods, planets, components and facilities it is important that you install them only into the Pictures folder. Otherwise they will not overwrite the needed images.

In most cases people install them into SpaceEmpiresIV/Pictures/Planets and that simply adds a sub folder into your Planets folder named Planets.

I hope this makes sense.

About maps, don't worry, I think your ok there. The newest maps included with the mod were made from the files in the mod so they should be ok.