Thread:BiggestQuakefanEver/@comment-3547390-20120420060047/@comment-3547390-20120427213739

1. The texture pack is a WIP and hasn't added the textures yet. In this case you can get rid of it for the time being until it becomes more stable.

2. The texture pack is outdated and there is a new version you can download.

3, The texture pack is corrupt and you should download a new one.

The textures you're talking of are probably placeholders (each game has a different one, but I am pretty sure that is a texture that is not supposed to be there's purpose), the shape that makes them polygonal is because their model isn't defined (this I know from video game design, it is common to a lot of games). Armagon and Dissolution don't really have much work done due to the focus on the base game. Getting rid of or changing your file should fix it depending on whatever condition above it your problem.