New Post: Trying to open file in GhostScript rasterizer

I'm trying to implement your method from here Rasterize to allow me to rasterize pdf into collection of images.

When I try to open pdf file

_rasterizer.Open(inputPdfPath, _lastInstalledVersion, false);

I get this error: An error occured when call to 'gsapi_init_with_args' is made: -15

What can be a reason for it. I've checked the file path and it seems to be correct

Thanks