diff --git a/source/de/anomic/index/indexURL.java b/source/de/anomic/index/indexURL.java
index 8dc692c19..4030aa5c1 100644
--- a/source/de/anomic/index/indexURL.java
+++ b/source/de/anomic/index/indexURL.java
@@ -33,6 +33,7 @@ import java.text.SimpleDateFormat;
 import java.util.HashMap;
 
 import de.anomic.kelondro.kelondroBase64Order;
+import de.anomic.kelondro.kelondroIndex;
 import de.anomic.kelondro.kelondroTree;
 import de.anomic.server.serverCodings;
 import de.anomic.yacy.yacySeedDB;
@@ -405,14 +406,18 @@ public class indexURL {
  
  
  // the class object
- protected kelondroTree urlHashCache;
+ protected kelondroIndex urlHashCache;
  
  public indexURL() {
      urlHashCache = null;
  }
 
  public int size() {
-     return urlHashCache.size();
+     try {
+        return urlHashCache.size();
+    } catch (IOException e) {
+        return 0;
+    }
  }
 
  public boolean remove(String hash) {
@@ -429,15 +434,18 @@ public class indexURL {
  }
 
  public int cacheNodeChunkSize() {
-     return urlHashCache.cacheNodeChunkSize();
+     if (urlHashCache instanceof kelondroTree) return ((kelondroTree) urlHashCache).cacheNodeChunkSize();
+     return 0;
  }
  
  public int[] cacheNodeStatus() {
-     return urlHashCache.cacheNodeStatus();
+     if (urlHashCache instanceof kelondroTree) return ((kelondroTree) urlHashCache).cacheNodeStatus();
+     return null;
  }
  
  public String[] cacheObjectStatus() {
-     return urlHashCache.cacheObjectStatus();
+     if (urlHashCache instanceof kelondroTree) return ((kelondroTree) urlHashCache).cacheObjectStatus();
+     return null;
  }
  
 
diff --git a/source/de/anomic/plasma/plasmaCrawlEURL.java b/source/de/anomic/plasma/plasmaCrawlEURL.java
index 6a3912d18..71f238ff5 100644
--- a/source/de/anomic/plasma/plasmaCrawlEURL.java
+++ b/source/de/anomic/plasma/plasmaCrawlEURL.java
@@ -140,8 +140,9 @@ public class plasmaCrawlEURL extends indexURL {
 
         if (cachePath.exists()) try {
             // open existing cache
-            urlHashCache = new kelondroTree(cachePath, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent);
-            urlHashCache.assignRowdef(rowdef);
+            kelondroTree tree = new kelondroTree(cachePath, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent);
+            tree.assignRowdef(rowdef);
+            urlHashCache = tree;
         } catch (IOException e) {
             cachePath.delete();
             urlHashCache = new kelondroTree(cachePath, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent, rowdef, true);
diff --git a/source/de/anomic/plasma/plasmaCrawlLURL.java b/source/de/anomic/plasma/plasmaCrawlLURL.java
index bd9398679..1d59a4c5d 100644
--- a/source/de/anomic/plasma/plasmaCrawlLURL.java
+++ b/source/de/anomic/plasma/plasmaCrawlLURL.java
@@ -115,8 +115,9 @@ public final class plasmaCrawlLURL extends indexURL {
         if (cachePath.exists()) {
             // open existing cache
             try {
-                urlHashCache = new kelondroTree(cachePath, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent);
-                urlHashCache.assignRowdef(rowdef);
+                kelondroTree tree = new kelondroTree(cachePath, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent);
+                tree.assignRowdef(rowdef);
+                urlHashCache = tree;
             } catch (IOException e) {
                 cachePath.getParentFile().mkdirs();
                 urlHashCache = new kelondroTree(cachePath, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent, rowdef, true);
diff --git a/source/de/anomic/plasma/plasmaCrawlNURL.java b/source/de/anomic/plasma/plasmaCrawlNURL.java
index 19db11c73..695606298 100644
--- a/source/de/anomic/plasma/plasmaCrawlNURL.java
+++ b/source/de/anomic/plasma/plasmaCrawlNURL.java
@@ -168,8 +168,9 @@ public class plasmaCrawlNURL extends indexURL {
         File cacheFile = new File(cacheStacksPath, "urlNotice1.db");
         if (cacheFile.exists()) try {
             // open existing cache
-            urlHashCache = new kelondroTree(cacheFile, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent);
-            urlHashCache.assignRowdef(rowdef);
+            kelondroTree tree = new kelondroTree(cacheFile, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent);
+            tree.assignRowdef(rowdef);
+            urlHashCache = tree;
         } catch (IOException e) {
             cacheFile.delete();
             urlHashCache = new kelondroTree(cacheFile, bufferkb * 0x400, preloadTime, kelondroTree.defaultObjectCachePercent, rowdef, true);
@@ -249,15 +250,6 @@ public class plasmaCrawlNURL extends indexURL {
             plasmaCrawlNURL.this.initThead = null;
         }
     }
-
-    /*
-    private static String normalizeHost(String host) {
-        if (host.length() > urlHostLength) host = host.substring(0, urlHostLength);
-        host = host.toLowerCase();
-        while (host.length() < urlHostLength) host = host + " ";
-        return host;
-    }
-    */
     
     private static String normalizeHandle(int h) {
         String d = Integer.toHexString(h);
@@ -484,7 +476,6 @@ public class plasmaCrawlNURL extends indexURL {
             this.flags         = new bitfield(urlFlagLength);
             this.handle        = 0;
             this.stored        = false;
-            store();
         }
 
         public Entry(String hash) throws IOException {