Nice cube map tutorial GraPhix.
Just a quick question, the way you lay them out in photoshop side by side like that, i take it that's a Photoshop thing and the export automatically layers them on top of each other? Because i've found in Gimp for a cube map to work properly in GameGuru they need to be on separate layers overlayed and the texture needs to be square or you get stretched maps.
Also, generate mipmaps, is that on for a reason? In Gimp i've found if you generate mipmaps on a cube map it doesn't work in GameGuru, looks like it's different for Photoshop.
i7 7700,k NV1070 8GB, 16GB 3200mhz memory, 1x 2TB Hybrid, Win10.
i5 4760k, NV960 2GB, 16GB 2333mhz memory, 1x 2TB Hybrid, Win10.
i3, Intel 4000 series graphics, 6GB memory, 1x 500gb HDD, Win8.1.