David G is correct,
Here is the excerpt from the Installation readme file.
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INFORMATION
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1. This mod uses the Image Mod Pack (Not Included):
A. Planets Mod - Not Included
B. Components Mod - Only the New Images for this mod are included)
C. Facilities Mod - Not included
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TROUBLE SHOOTING
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Question: I get errors saying that I do not have a BMP file. Why?
ANSW$ER: You need to install the Image Mod Components/Facilities/Planets/Combat modules.