Okay SO I installed 7zip, added in the file, and it still will not go to day 12. it just keeps sending me to the main menu. Can you give me a step by step. I download the update file, I get a single document "SIS Days 12-13 update" I drag and drop that into game, and it still does not work.
Step 1: With 7Zip installed, double-click the update file. An archive/folder will open. Step 2: Within that archive are files like "d12_images.rpa" and "laptop_images.rpa" - you want to highlight all the files within this archive and drag/drop them into your Stranded in Space "game" folder - overwriting everything that wants to be overwritten. Step 3: If there is a file within your "game" folder called exactly "scripts.rpa" - make sure to delete it. It has to be exactly called that - if there isn't a file exactly called that, you don't need to delete anything.
