1) Download and install
Visual Studio Community 2017 for free.
2) Run game client (or server if you want to catch server crash).
3) In Visual Studio select menu "Debug" and "Attach to process..."
4) Select Murnatan-Shipping.exe with title and click on "Attach" button.
5) When crash happen, click on "break" button, make window "Call Stack" bigger (to see everything) and take screenshot of full Visual Studio window.
6) Add bug to bugtracker, attach this screenshot and describe how to replicate crash or what you did before crash.