Production Line saves all its user documents here:

\my documents\my games\production line

Thats where you will find savegames and also any debug files in the 'debug' folder. If the game crashes, we will ask you to email those to us at support AT positech dot co dot uk. As issues become reported and known wwe will post workarounds and notices on this page. The game is developed on Windows 10 64bit, so that should work fine, as should earlier versions of windows. Make sure you have the latest drivers for both your video card and sound card. The minimum supported screen resolution for the game is 1280 width by 768 height. It will not run at resolutions below this!