I was playing through it actually, and all of sudden when I loaded up my saved game the language had changed from English over to Russian perhaps? I'm not really sure, but the only thing I've found from my Googling was a GOG section where you can select English.
From the Configuration page you can select English, and only English. So something is not right. I went ahead and downloaded the 1.4 and then the 1.5 and the 1.6 test versions. The game still shows the version as 1.3 though on the screen just beyond the intro page strangely.
Does anyone happen to know how I can solve this language issue? Thanks!