small fix to the tree cutter

src/main/java/com/seibel/lod/builders/LodBufferBuilder.java

@@ -66,7 +66,8 @@ public class LodBufferBuilder
 	/** This holds the thread used to generate new LODs off the main thread. */
 	private ExecutorService mainGenThread = Executors.newSingleThreadExecutor(new LodThreadFactory(this.getClass().getSimpleName() + " - main"));
 	/** This holds the threads used to generate buffers. */
-	private ExecutorService bufferBuilderThreads = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors(), new LodThreadFactory(this.getClass().getSimpleName() + " - builder"));
+	private ExecutorService bufferBuilderThreads = Executors.newSingleThreadExecutor(new LodThreadFactory(this.getClass().getSimpleName() + " - buffer builder"));
+	//private ExecutorService bufferBuilderThreads = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors(), new LodThreadFactory(this.getClass().getSimpleName() + " - builder"));
 	
 	private LodBuilder LodQuadTreeNodeBuilder;
 	
@@ -445,7 +446,7 @@ public class LodBufferBuilder
 							
 							positionWaitingToBeGenerated.add(chunkPos);
 							numberOfChunksWaitingToGenerate.addAndGet(1);
-							LodNodeGenWorker genWorker = new LodNodeGenWorker(chunkPos, LodConfig.CLIENT.distanceGenerationMode.get(), LodConfig.CLIENT.maxGenerationDetail.get(), renderer, LodQuadTreeNodeBuilder, this, lodDim, serverWorld);
+							LodNodeGenWorker genWorker = new LodNodeGenWorker(chunkPos,generationRequest.generationMode, generationRequest.detail, renderer, LodQuadTreeNodeBuilder, this, lodDim, serverWorld);
 							WorldWorkerManager.addWorker(genWorker);
 						}
 					}

src/main/java/com/seibel/lod/objects/LodRegion.java

@@ -585,6 +585,9 @@ public class LodRegion implements Serializable
      */
     public LevelContainer getLevel(byte lod)
     {
+        if(lod < minDetailLevel){
+            throw new IllegalArgumentException("getLevel asked for a level that does not exist: minimum " + minDetailLevel + " level requested " + lod);
+        }
         return new LevelContainer(lod, colors[lod], height[lod], depth[lod], generationType[lod], dataExistence[lod]);
     }
 
@@ -613,6 +616,7 @@ public class LodRegion implements Serializable
     {
         if(minDetailLevel < detailLevel)
         {
+            System.out.println("cutting at " + regionPosX + " " + regionPosZ + " " + detailLevel);
             for (byte tempLod = 0; tempLod < detailLevel; tempLod++)
             {
                 colors[tempLod] = new byte[0][0][0];

src/main/java/com/seibel/lod/util/DetailUtil.java

@@ -33,6 +33,7 @@ public class DetailUtil
             LodDetail.DOUBLE,
             LodDetail.DOUBLE,
             LodDetail.SINGLE,
+            LodDetail.SINGLE,
             LodDetail.SINGLE};
 
     public static int getDistanceRendering(int detail)