When it crashed, the error message told you it made a crash log.
That log should be in the same location as where saves are stored - "C:\Users\(username)\AppData\LocalLow\Sandlust Games Ltd".
It should be a text file with the name it says in the picture you already posted.
Attach that text file to a post (bottom left when making a new post), and hopefully one of us can use that to see what might be causing the problem.
Alternatively, as
Microtom helpfully reminded us earlier, the game's going to be changing engine soon, so you could just wait until then before playing again.