hi, I am writing here to report on a bug with this mod, I have checked the logs but apparently nothing is wrong, but for some reason all the SSTU parts are missing icons and have no models, i have no idea what to do please help

Please upload a KSP.log file. It can be found in the same directory as the KSP executable. It will contain the information needed to help diagnose this problem.

Sounds like you do not have the 000_TexturesUnlimited directory OR have altered the ColorPresets.cfg file to remove a color that is used. I get the same thing then, where parts do not show up on saved craft files and their icon is empty. Replacing the folder/file with the original should fix it.