Installation Instructions:
Wing Loader
1) Extract the contents of WingLoaderv0.92.zip somewhere on your computer. ex: C:\Games
Wing Commander I
1) Install "Wing Commander" via GOG / GOG Galaxy into the Root WingLoader folder. ex: C:\Games\Wingloader so the final result will look like C:\Games\Wingloader\Wing Commander
2) Download Wing Commander 1.5
https://www.wcnews.com/wcpedia/Secret_Missions_1.5_(Kilrathi_Saga) and extract the contents of sm15_kilrathisaga.zip into the "gamedat" folder.
*Skip the overwrite. It will not cause you issues if you do, Wing Loader Manages the Install.dat file for you.
3) Grab the latest version of WCDX
https://github.com/Bekenn/wcdx/releases and extract the files into the Wing Commander install folder.
4) Run Wing Loader and click the Gear icon at the lower right and select "Patch Wing Commander I".
WC_wcdx.exe SM1_wcdx.exe SM2_wcdx.exe