diff --git a/examples/Paging/main.cpp b/examples/Paging/main.cpp
index f10c2331..55e08b75 100644
--- a/examples/Paging/main.cpp
+++ b/examples/Paging/main.cpp
@@ -37,129 +37,6 @@ freely, subject to the following restrictions:
 //Use the PolyVox namespace
 using namespace PolyVox;
 
-void createPerlinVolumeSlow(LargeVolume<MaterialDensityPair44>& volData)
-{
-	Perlin perlin(2,8,1,234);
-
-	for(int z = 1; z < 256-1; z++)
-	{
-		std::cout << z << std::endl;
-		for(int y = 1; y < 256-1; y++)
-		{
-			for(int x = 1; x < 256-1; x++)
-			{							
-				float perlinVal = perlin.Get3D(x /static_cast<float>(256-1), (y) / static_cast<float>(256-1), z / static_cast<float>(256-1));
-
-				perlinVal += 1.0f;
-				perlinVal *= 0.5f;
-				perlinVal *= MaterialDensityPair44::getMaxDensity();
-
-				MaterialDensityPair44 voxel;
-
-				voxel.setMaterial(245);
-				voxel.setDensity(perlinVal);
-
-				/*if(perlinVal < 0.0f)
-				{
-					voxel.setMaterial(245);
-					voxel.setDensity(MaterialDensityPair44::getMaxDensity());
-				}
-				else
-				{
-					voxel.setMaterial(0);
-					voxel.setDensity(MaterialDensityPair44::getMinDensity());
-				}*/
-
-				volData.setVoxelAt(x, y, z, voxel);
-			}
-		}
-	}
-}
-
-/*void createPerlinVolumeFast(LargeVolume<MaterialDensityPair44>& volData)
-{
-	Perlin perlin(2,8,1,234);
-
-	for(int blockZ = 0; blockZ < volData.m_uDepthInBlocks; blockZ++)
-	{		
-		std::cout << blockZ << std::endl;
-		for(int blockY = 0; blockY < volData.m_uHeightInBlocks; blockY++)
-		{
-			for(int blockX = 0; blockX < volData.m_uWidthInBlocks; blockX++)
-			{
-				for(int offsetz = 0; offsetz < volData.m_uBlockSideLength; offsetz++)
-				{
-					for(int offsety = 0; offsety < volData.m_uBlockSideLength; offsety++)
-					{
-						for(int offsetx = 0; offsetx < volData.m_uBlockSideLength; offsetx++) 
-						{							
-							int x = blockX * volData.m_uBlockSideLength + offsetx;
-							int y = blockY * volData.m_uBlockSideLength + offsety;
-							int z = blockZ * volData.m_uBlockSideLength + offsetz;
-
-							if((x == 0) || (x == volData.getWidth()-1)) continue;
-							if((y == 0) || (y == volData.getHeight()-1)) continue;
-							if((z == 0) || (z == volData.getDepth()-1)) continue;
-
-							float perlinVal = perlin.Get3D(x /static_cast<float>(volData.getWidth()-1), (y) / static_cast<float>(volData.getHeight()-1), z / static_cast<float>(volData.getDepth()-1));
-
-							MaterialDensityPair44 voxel;
-							if(perlinVal < 0.0f)
-							{
-								voxel.setMaterial(245);
-								voxel.setDensity(MaterialDensityPair44::getMaxDensity());
-							}
-							else
-							{
-								voxel.setMaterial(0);
-								voxel.setDensity(MaterialDensityPair44::getMinDensity());
-							}
-
-							volData.setVoxelAt(x, y, z, voxel);
-						}
-					}
-				}
-			}
-		}			
-	}
-}*/
-
-void createPerlinTerrain(LargeVolume<MaterialDensityPair44>& volData)
-{
-	Perlin perlin(2,2,1,234);
-
-	for(int x = 1; x < 255-1; x++)
-	{
-		if(x%(255/100) == 0) {
-			std::cout << "." << std::flush;
-		}
-		for(int y = 1; y < 255-1; y++)
-		{
-			float perlinVal = perlin.Get(x / static_cast<float>(255-1), y / static_cast<float>(255-1));
-			perlinVal += 1.0f;
-			perlinVal *= 0.5f;
-			perlinVal *= 255;
-			for(int z = 1; z < 255-1; z++)
-			{							
-				MaterialDensityPair44 voxel;
-				if(z < perlinVal)
-				{
-					voxel.setMaterial(245);
-					voxel.setDensity(MaterialDensityPair44::getMaxDensity());
-				}
-				else
-				{
-					voxel.setMaterial(0);
-					voxel.setDensity(MaterialDensityPair44::getMinDensity());
-				}
-
-				volData.setVoxelAt(x, y, z, voxel);
-			}
-		}
-	}
-	std::cout << std::endl;
-}
-
 void createSphereInVolume(LargeVolume<MaterialDensityPair44>& volData, Vector3DFloat v3dVolCenter, float fRadius)
 {
 	//This vector hold the position of the center of the volume
@@ -251,12 +128,13 @@ public:
 						voxel.setDensity(MaterialDensityPair44::getMinDensity());
 					}
 
+					// Voxel position within a block always start from zero. So if a block represents region (4, 8, 12) to (11, 19, 15)
+					// then the valid block voxels are from (0, 0, 0) to (7, 11, 3). Hence we subtract the lower corner position of the
+					// region from the volume space position in order to get the block space position.
 					pBlockData->setVoxelAt(x - region.getLowerX(), y - region.getLowerY(), z - region.getLowerZ(), voxel);
 				}
 			}
 		}
-
-		pBlockData->destroyUncompressedData();
 	}
 
 	virtual void pageOut(const Region& region, Block<MaterialDensityPair44>* pBlockData)
diff --git a/library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl b/library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl
index ef8dbb40..ab6f4b46 100644
--- a/library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl
+++ b/library/PolyVoxCore/include/PolyVoxCore/LargeVolume.inl
@@ -586,7 +586,7 @@ namespace PolyVox
 		//This check should also provide a significant speed boost as usually it is true.
 		if((v3dBlockPos == m_v3dLastAccessedBlockPos) && (m_pLastAccessedBlock != 0))
 		{
-			POLYVOX_ASSERT(m_pLastAccessedBlock->m_tUncompressedData, "Block has no uncompressed data");
+			POLYVOX_ASSERT(m_pLastAccessedBlock->hasUncompressedData(), "Last accessed block has no uncompressed data.");
 			return m_pLastAccessedBlock;
 		}		
 
@@ -649,7 +649,6 @@ namespace PolyVox
 
 		if(block.hasUncompressedData())
 		{ 			
-			POLYVOX_ASSERT(m_pLastAccessedBlock->m_tUncompressedData, "Block has no uncompressed data");
 			return m_pLastAccessedBlock;
 		}