* New Terrain Module (disabled, search for 'usingTerrainModule = false' to reenable)

* *Much* faster terraforming (woot!)
* New "Brushes" design, so you can create custom terraforming brushes then apply those inplace of the standard tools. (ie an Erode Brush for example)
* New specialised "Flood Brushes" to do large area effects, ie, raise-area, now takes a bitmap rather than repeats the ordinary raise brush a thousand times.
* New modular file Load/Save systems -- write importers/exporters for multiple formats without having to hard code the whole thing in.
* Coming soon - effects system, ie the old Erosion functions, etc. for one-shot effects.

OpenSim/Region/Terrain.BasicTerrain/TerrainEngine.cs

@@ -297,9 +297,14 @@ namespace OpenSim.Region.Terrain
                 {
                     for (int y = 0; y < 16; y++)
                     {
-                        if (IsTainted(x*16, y*16))
+                        if (IsTainted(x * 16, y * 16))
                         {
-                            remoteUser.SendLayerData(x, y, GetHeights1D());
+                            bool usingTerrainModule = false;
+
+                            if (!usingTerrainModule)
+                            {
+                                remoteUser.SendLayerData(x, y, GetHeights1D());
+                            }
                         }
                     }
                 }