I can confirm the missing texture issue. I joined one of the servers hosting this and many of the textures had been substituted with the default Blockland map textures (such as the sky-sphere being beige).
The original concept of the map is alright, but it isn't a great fit for the TGE.
One of the main challenges was making it playable on a range of computers; low resolution textures on the large planet 'spheres' looked awful, but decreased load times and used up less memory. Using interiors for the surface of each planet was also a major compromise; on the one hand they could be positioned at any height and distance away from the origin without a problem, but on the other hand they are incredibly glitchy, susceptible to lighting anomalies, and can have awful vehicle collisions.
There were some unique features to the original release such as a deadly sun and zero-gravity but they didn't really redeem the shortcomings of what turned out to be an ill constructed map. It could be remade on a less ambitious scale, but I don't approve of the current port.