Sudden Sass compile error

[ghost]

I've been working on a couple of projects for a while now, without any issues. Suddenly, Koala throws me a compile error. The error comes at all files in all Sass projects (I only use Sass), so it is not related to my css.

The error doesn't give any specifications. It only prints the location of my scss file. Using this method to debug, I get the following:
Error {killed: false, code: -1073741819, signal: null} main.js:37

I'm using latest Koala version (2.0.4) on Windows 10.

Hope anyone can help me out here.