diff --git a/SchematicSystem_14/pom.xml b/SchematicSystem_14/pom.xml
index 98a4957..371b1cc 100644
--- a/SchematicSystem_14/pom.xml
+++ b/SchematicSystem_14/pom.xml
@@ -40,8 +40,8 @@
         </dependency>
         <dependency>
             <groupId>steamwar</groupId>
-            <artifactId>FAWE</artifactId>
-            <version>1.14</version>
+            <artifactId>WorldEdit</artifactId>
+            <version>1.15</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>
diff --git a/SchematicSystem_14/src/de/steamwar/schematicsystem/WorldEdit_14.java b/SchematicSystem_14/src/de/steamwar/schematicsystem/WorldEdit_14.java
index 6d3336b..beecc4e 100644
--- a/SchematicSystem_14/src/de/steamwar/schematicsystem/WorldEdit_14.java
+++ b/SchematicSystem_14/src/de/steamwar/schematicsystem/WorldEdit_14.java
@@ -1,7 +1,6 @@
 package de.steamwar.schematicsystem;
 
 import com.sk89q.worldedit.EditSession;
-import com.sk89q.worldedit.MaxChangedBlocksException;
 import com.sk89q.worldedit.WorldEdit;
 import com.sk89q.worldedit.bukkit.BukkitWorld;
 import com.sk89q.worldedit.extent.clipboard.Clipboard;
@@ -28,12 +27,8 @@ class WorldEdit_14 {
         BlockVector3 dimensions = clipboard.getDimensions();
         BlockVector3 v = vector.subtract(dimensions.getX()/2 - dimensions.getX()%2, 0, dimensions.getZ()).subtract(offset);
         EditSession e = WorldEdit.getInstance().getEditSessionFactory().getEditSession(weWorld, -1);
-        try {
-            Operations.completeBlindly(new ClipboardHolder(clipboard).createPaste(e).to(v).build());
-        } catch (MaxChangedBlocksException ex) {
-            throw new IOException(ex);
-        }
-        e.flushQueue();
+        Operations.completeBlindly(new ClipboardHolder(clipboard).createPaste(e).to(v).build());
+        e.flushSession();
         return e;
     }
 }
diff --git a/SchematicSystem_15/pom.xml b/SchematicSystem_15/pom.xml
index 365f874..0969ed3 100644
--- a/SchematicSystem_15/pom.xml
+++ b/SchematicSystem_15/pom.xml
@@ -45,8 +45,8 @@
         </dependency>
         <dependency>
             <groupId>steamwar</groupId>
-            <artifactId>FAWE</artifactId>
-            <version>1.14</version>
+            <artifactId>WorldEdit</artifactId>
+            <version>1.15</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>
diff --git a/SchematicSystem_15/src/de/steamwar/schematicsystem/CheckSchemType_15.java b/SchematicSystem_15/src/de/steamwar/schematicsystem/CheckSchemType_15.java
index d92596f..3f89708 100644
--- a/SchematicSystem_15/src/de/steamwar/schematicsystem/CheckSchemType_15.java
+++ b/SchematicSystem_15/src/de/steamwar/schematicsystem/CheckSchemType_15.java
@@ -99,6 +99,10 @@ class CheckSchemType_15 {
                 for(int z = min.getBlockZ(); z <= max.getBlockZ(); z++){
                     final BaseBlock block = clipboard.getFullBlock(BlockVector3.at(x, y, z));
                     final Material blockMaterial = Material.matchMaterial(block.getBlockType().getId());
+                    if(blockMaterial == null)
+                        throw new SecurityException("Unknown material, please resolve " + block.getBlockType().getName() + " " + block.getBlockType().getId());
+
+                    result.checkMaterial(blockMaterial.name());
 
                     if(blockMaterial == Material.TNT || blockMaterial == Material.OBSIDIAN)
                         tnt++;
@@ -109,12 +113,8 @@ class CheckSchemType_15 {
                     if(blockMaterial == Material.DISPENSER)
                         dispenser++;
 
-                    if(INVENTORY.contains(blockMaterial)){
-                        checkInventory(result, block, blockMaterial, type);
-                    }
-
-                    assert blockMaterial != null;
-                    result.checkMaterial(blockMaterial.name());
+                    if(INVENTORY.contains(blockMaterial))
+                        checkInventory(result, block, blockMaterial);
                 }
             }
         }
@@ -126,7 +126,7 @@ class CheckSchemType_15 {
         return result;
     }
 
-    private static void checkInventory(AutoCheckResult result, BaseBlock block, Material blockMaterial, ICheckSchemType type){
+    private static void checkInventory(AutoCheckResult result, BaseBlock block, Material blockMaterial){
         CompoundTag nbt = block.getNbtData();
         if(nbt == null){
             result.defunctNbt(blockMaterial.name());