I can say that I have the same problem since version 5.05, the original XP files are disappeared, skycolors and moon. I tried to reinstall, now something very weird happens.
The installer obviously can't install, because of these messages: "Unable to component Skymaxx pro: Component file version does not match. Problem running post install:
Eula.txt
ACF_version.txt
Retry doesn't help, ignore and the installer tells me the install is finished, but nothing is installed!
Please help, I can't install anymore....
Cornelis