I can't get my costum stories

[ZodiaC]

And I have no clue what a redist file is. I don't have one

If you have a steam version then you extract the CS folder into "C:\Program Files (x86)\Steam\steamapps\common\amnesia the dark descent\Custom_Stories" else you should search for the redist file and find the Custom_stories Folder.That works only for customs stories!
For full conversions you just extract all the files into redist or amnesia the dark descentfolder and run a cmd(bat) file.