Happy the issue has gone away. There hasn't been any development on the plugin for more than five years as I've been focusing on creating AI aircraft repaints, AI flight plans, AI models and other tools.
For the tower, there's a field called tower levels, where you can set different radii and select different textures for each "level"
There's a small showcase video here:
I believe these are the entries I used in the videos are these:
Tower 1:
Tower Levels: 2600;400;2700;450;2800;525;2900;625;3100;625;3100;675;3300;575;3300;500;3600;600
Tower 2:
Tower Levels: 400;330;900;280;1400;260;1700;250;2500;250;2800;400;2920;400;2920;395;2800;395;2800;275;3000;275;3400;400;3420;330;3500;200
Level Textures: 11;Scratchy window;20;B;11;Grey metal;100;F;12;Grey metal;100;C
Tower 3:
Tower Levels: 400;600;400;400;600;400;900;500;950;500
Level Textures: 3;Scratchy window;30;B;2;White brick wall;100;B;2;Wooden planks;100;F;4;Grey metal;100;C
The syntax is:
Tower Levels: Height;Radius;Height;Radius and so on
Level Textures: Tower Level;Texture Name;Opacity;Type;Tower Level;Texture Name;Opacity;Type; and so on. Type can be B (both faces textured, used to create windows), W (outside only textured), F (to create floors inside tower), C (to create ceilings inside tower)
If the texture is not found, the tool will stop drawing at that point.