diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/ColorReplaceCommand.java b/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/ColorReplaceCommand.java
index 13439c0e..010498a8 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/ColorReplaceCommand.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/ColorReplaceCommand.java
@@ -20,6 +20,7 @@
 package de.steamwar.bausystem.features.worldedit;
 
 import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.formatting.text.Component;
@@ -73,14 +74,18 @@ public class ColorReplaceCommand extends SWCommand {
             replacements.put("minecraft:" + from.getValue().name().toLowerCase() + "_" + type.toLowerCase(), "minecraft:" + to.name().toLowerCase() + "_" + type.toLowerCase());
         }
 
-        Region region = WorldEditUtils.getRegion(player);
-        EditSession editSession = WorldEditUtils.getEditSession(player);
+        try {
+            Region region = WorldEditUtils.getRegion(player);
+            EditSession editSession = WorldEditUtils.getEditSession(player);
 
-        SpecialReplace specialReplace = new SpecialReplace(editSession, replacements, from.getKey());
-        int affected = editSession.replaceBlocks(region, specialReplace, specialReplace);
-        editSession.flushSession();
-        WorldEditUtils.addToPlayer(player, editSession);
-        BukkitAdapter.adapt(player).printInfo(TranslatableComponent.of("worldedit.replace.replaced", new Component[]{TextComponent.of(affected)}));
+            SpecialReplace specialReplace = new SpecialReplace(editSession, replacements, from.getKey());
+            int affected = editSession.replaceBlocks(region, specialReplace, specialReplace);
+            editSession.flushSession();
+            WorldEditUtils.addToPlayer(player, editSession);
+            BukkitAdapter.adapt(player).printInfo(TranslatableComponent.of("worldedit.replace.replaced", new Component[]{TextComponent.of(affected)}));
+        } catch (IncompleteRegionException e) {
+            BukkitAdapter.adapt(player).printError(TranslatableComponent.of("worldedit.error.incomplete-region"));
+        }
     }
 
     @ClassMapper(value = Pair.class, local = true)
diff --git a/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/TypeReplaceCommand.java b/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/TypeReplaceCommand.java
index 556a6a67..0cc939d6 100644
--- a/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/TypeReplaceCommand.java
+++ b/BauSystem_Main/src/de/steamwar/bausystem/features/worldedit/TypeReplaceCommand.java
@@ -20,6 +20,7 @@
 package de.steamwar.bausystem.features.worldedit;
 
 import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.IncompleteRegionException;
 import com.sk89q.worldedit.bukkit.BukkitAdapter;
 import com.sk89q.worldedit.regions.Region;
 import com.sk89q.worldedit.util.formatting.text.Component;
@@ -72,33 +73,37 @@ public class TypeReplaceCommand extends SWCommand {
             return;
         }
 
-        Region region = WorldEditUtils.getRegion(player);
-        EditSession editSession = WorldEditUtils.getEditSession(player);
+        try {
+            Region region = WorldEditUtils.getRegion(player);
+            EditSession editSession = WorldEditUtils.getEditSession(player);
 
-        SpecialReplace specialReplace = new SpecialReplace(editSession, to.replacements(from.getValue()), from.getKey(), (oldBlockData, newBlockData) -> {
-            if (newBlockData instanceof Fence && oldBlockData instanceof Wall) {
-                Wall wall = (Wall) oldBlockData;
-                Fence fence = (Fence) newBlockData;
-                fence.setWaterlogged(wall.isWaterlogged());
-                fence.setFace(BlockFace.NORTH, wall.getHeight(BlockFace.NORTH) != Wall.Height.NONE);
-                fence.setFace(BlockFace.EAST, wall.getHeight(BlockFace.EAST) != Wall.Height.NONE);
-                fence.setFace(BlockFace.SOUTH, wall.getHeight(BlockFace.SOUTH) != Wall.Height.NONE);
-                fence.setFace(BlockFace.WEST, wall.getHeight(BlockFace.WEST) != Wall.Height.NONE);
-            }
-            if (newBlockData instanceof Wall && oldBlockData instanceof Fence) {
-                Wall wall = (Wall) newBlockData;
-                Fence fence = (Fence) oldBlockData;
-                wall.setWaterlogged(fence.isWaterlogged());
-                wall.setHeight(BlockFace.NORTH, fence.hasFace(BlockFace.NORTH) ? Wall.Height.LOW : Wall.Height.NONE);
-                wall.setHeight(BlockFace.EAST, fence.hasFace(BlockFace.EAST) ? Wall.Height.LOW : Wall.Height.NONE);
-                wall.setHeight(BlockFace.SOUTH, fence.hasFace(BlockFace.SOUTH) ? Wall.Height.LOW : Wall.Height.NONE);
-                wall.setHeight(BlockFace.WEST, fence.hasFace(BlockFace.WEST) ? Wall.Height.LOW : Wall.Height.NONE);
-            }
-        });
-        int affected = editSession.replaceBlocks(region, specialReplace, specialReplace);
-        editSession.flushSession();
-        WorldEditUtils.addToPlayer(player, editSession);
-        BukkitAdapter.adapt(player).printInfo(TranslatableComponent.of("worldedit.replace.replaced", new Component[]{TextComponent.of(affected)}));
+            SpecialReplace specialReplace = new SpecialReplace(editSession, to.replacements(from.getValue()), from.getKey(), (oldBlockData, newBlockData) -> {
+                if (newBlockData instanceof Fence && oldBlockData instanceof Wall) {
+                    Wall wall = (Wall) oldBlockData;
+                    Fence fence = (Fence) newBlockData;
+                    fence.setWaterlogged(wall.isWaterlogged());
+                    fence.setFace(BlockFace.NORTH, wall.getHeight(BlockFace.NORTH) != Wall.Height.NONE);
+                    fence.setFace(BlockFace.EAST, wall.getHeight(BlockFace.EAST) != Wall.Height.NONE);
+                    fence.setFace(BlockFace.SOUTH, wall.getHeight(BlockFace.SOUTH) != Wall.Height.NONE);
+                    fence.setFace(BlockFace.WEST, wall.getHeight(BlockFace.WEST) != Wall.Height.NONE);
+                }
+                if (newBlockData instanceof Wall && oldBlockData instanceof Fence) {
+                    Wall wall = (Wall) newBlockData;
+                    Fence fence = (Fence) oldBlockData;
+                    wall.setWaterlogged(fence.isWaterlogged());
+                    wall.setHeight(BlockFace.NORTH, fence.hasFace(BlockFace.NORTH) ? Wall.Height.LOW : Wall.Height.NONE);
+                    wall.setHeight(BlockFace.EAST, fence.hasFace(BlockFace.EAST) ? Wall.Height.LOW : Wall.Height.NONE);
+                    wall.setHeight(BlockFace.SOUTH, fence.hasFace(BlockFace.SOUTH) ? Wall.Height.LOW : Wall.Height.NONE);
+                    wall.setHeight(BlockFace.WEST, fence.hasFace(BlockFace.WEST) ? Wall.Height.LOW : Wall.Height.NONE);
+                }
+            });
+            int affected = editSession.replaceBlocks(region, specialReplace, specialReplace);
+            editSession.flushSession();
+            WorldEditUtils.addToPlayer(player, editSession);
+            BukkitAdapter.adapt(player).printInfo(TranslatableComponent.of("worldedit.replace.replaced", new Component[]{TextComponent.of(affected)}));
+        } catch (IncompleteRegionException e) {
+            BukkitAdapter.adapt(player).printError(TranslatableComponent.of("worldedit.error.incomplete-region"));
+        }
     }
 
     @ClassMapper(value = Pair.class, local = true)