Well, awkward thing is i restarted my computer and now it's working fine, i assume it was some sort of issue with my graphical card.
Nonetheless, thank you for the help

Hello, as i was playing factorio 0.15.12 my game crashed unexpectedly. Now when i try to open the game i get this error message: "Too big source bitmap, can't fit atlas. Width; bitmap:_core_/graphics/health-bar-green.png".
Perhaps some extra information i should provide: i had been playing the map ...