diff --git a/src/yugecin/opsudance/core/Demux.java b/src/yugecin/opsudance/core/Demux.java
index cb248bca..c9f2972e 100644
--- a/src/yugecin/opsudance/core/Demux.java
+++ b/src/yugecin/opsudance/core/Demux.java
@@ -23,9 +23,11 @@ import org.newdawn.slick.Input;
 import org.newdawn.slick.KeyListener;
 import org.newdawn.slick.MouseListener;
 import yugecin.opsudance.core.state.transitions.*;
+import yugecin.opsudance.errorhandling.ErrorDumpable;
 import yugecin.opsudance.kernel.InstanceContainer;
 import yugecin.opsudance.core.state.OpsuState;
 
+import java.io.StringWriter;
 import java.lang.reflect.InvocationHandler;
 import java.lang.reflect.Method;
 import java.lang.reflect.Proxy;
@@ -33,7 +35,7 @@ import java.lang.reflect.Proxy;
 /**
  * state demultiplexer, sends events to current state
  */
-public class Demux implements KeyListener, MouseListener {
+public class Demux implements ErrorDumpable, KeyListener, MouseListener {
 
 	private final InstanceContainer instanceContainer;
 
@@ -98,6 +100,22 @@ public class Demux implements KeyListener, MouseListener {
 		state.enter();
 	}
 
+	@Override
+	public void writeErrorDump(StringWriter dump) {
+		dump.append("> Demux dump\n");
+		if (isTransitioning()) {
+			dump.append("doing a transition\n");
+			dump.append("using out transition ").append(outTransitionState.getClass().getSimpleName()).append('\n');
+			dump.append("using in  transition ").append(inTransitionState.getClass().getSimpleName()).append('\n');
+			if (state == inTransitionState) {
+				dump.append("currently doing the in transition\n");
+			} else {
+				dump.append("currently doing the out transition\n");
+			}
+		}
+		state.writeErrorDump(dump);
+	}
+
 	/*
 	 * demux stuff below
 	 */
diff --git a/src/yugecin/opsudance/core/DisplayContainer.java b/src/yugecin/opsudance/core/DisplayContainer.java
index 93d3bc1b..7a49b91d 100644
--- a/src/yugecin/opsudance/core/DisplayContainer.java
+++ b/src/yugecin/opsudance/core/DisplayContainer.java
@@ -204,8 +204,9 @@ public class DisplayContainer implements ErrorDumpable {
 
 	@Override
 	public void writeErrorDump(StringWriter dump) {
-		dump.append("> DisplayContainer dump").append('\n');
-		dump.append("OpenGL version: ").append(glVersion).append( "(").append(glVendor).append(")").append('\n');
+		dump.append("> DisplayContainer dump\n");
+		dump.append("OpenGL version: ").append(glVersion).append( "(").append(glVendor).append(")\n");
+		demux.writeErrorDump(dump);
 	}
 
 }
diff --git a/src/yugecin/opsudance/core/state/BaseOpsuState.java b/src/yugecin/opsudance/core/state/BaseOpsuState.java
index 07a7f173..2d6e7755 100644
--- a/src/yugecin/opsudance/core/state/BaseOpsuState.java
+++ b/src/yugecin/opsudance/core/state/BaseOpsuState.java
@@ -20,6 +20,8 @@ package yugecin.opsudance.core.state;
 import yugecin.opsudance.core.DisplayContainer;
 import yugecin.opsudance.core.ResolutionChangeListener;
 
+import java.io.StringWriter;
+
 public abstract class BaseOpsuState implements OpsuState, ResolutionChangeListener {
 
 	protected final DisplayContainer displayContainer;
@@ -91,4 +93,10 @@ public abstract class BaseOpsuState implements OpsuState, ResolutionChangeListen
 		return false;
 	}
 
+	@Override
+	public void writeErrorDump(StringWriter dump) {
+		dump.append("> BaseOpsuState dump\n");
+		dump.append("isDirty: ").append(String.valueOf(isDirty)).append('\n');
+	}
+
 }
diff --git a/src/yugecin/opsudance/core/state/OpsuState.java b/src/yugecin/opsudance/core/state/OpsuState.java
index 22611efa..36d2e581 100644
--- a/src/yugecin/opsudance/core/state/OpsuState.java
+++ b/src/yugecin/opsudance/core/state/OpsuState.java
@@ -18,8 +18,9 @@
 package yugecin.opsudance.core.state;
 
 import org.newdawn.slick.Graphics;
+import yugecin.opsudance.errorhandling.ErrorDumpable;
 
-public interface OpsuState {
+public interface OpsuState extends ErrorDumpable {
 
 	void update(int delta);
 	void preRenderUpdate(int delta);
diff --git a/src/yugecin/opsudance/core/state/transitions/TransitionState.java b/src/yugecin/opsudance/core/state/transitions/TransitionState.java
index 5956da7d..11bcad13 100644
--- a/src/yugecin/opsudance/core/state/transitions/TransitionState.java
+++ b/src/yugecin/opsudance/core/state/transitions/TransitionState.java
@@ -22,6 +22,8 @@ import yugecin.opsudance.core.DisplayContainer;
 import yugecin.opsudance.core.state.BaseOpsuState;
 import yugecin.opsudance.core.state.OpsuState;
 
+import java.io.StringWriter;
+
 public abstract class TransitionState extends BaseOpsuState {
 
 	protected OpsuState applicableState;
@@ -79,4 +81,17 @@ public abstract class TransitionState extends BaseOpsuState {
 		return false;
 	}
 
+	@Override
+	public void writeErrorDump(StringWriter dump) {
+		dump.append("> TransitionState dump\n");
+		dump.append("progress: ").append(String.valueOf(transitionTime)).append("/").append(String.valueOf(transitionTargetTime)).append('\n');
+		dump.append("applicable state: ");
+		if (applicableState == null) {
+			dump.append("IS NULL");
+			return;
+		}
+		dump.append(applicableState.getClass().getSimpleName()).append('\n');
+		applicableState.writeErrorDump(dump);
+	}
+
 }
diff --git a/src/yugecin/opsudance/states/EmptyRedState.java b/src/yugecin/opsudance/states/EmptyRedState.java
index 2e8cbc16..5f98b8f3 100644
--- a/src/yugecin/opsudance/states/EmptyRedState.java
+++ b/src/yugecin/opsudance/states/EmptyRedState.java
@@ -23,6 +23,8 @@ import org.newdawn.slick.Graphics;
 import yugecin.opsudance.core.DisplayContainer;
 import yugecin.opsudance.core.state.OpsuState;
 
+import java.io.StringWriter;
+
 public class EmptyRedState implements OpsuState {
 
 	private int counter;
@@ -96,4 +98,10 @@ public class EmptyRedState implements OpsuState {
 		return false;
 	}
 
+	@Override
+	public void writeErrorDump(StringWriter dump) {
+		dump.append("> EmptyRedState dump\n");
+		dump.append("its red\n");
+	}
+
 }
diff --git a/src/yugecin/opsudance/states/EmptyState.java b/src/yugecin/opsudance/states/EmptyState.java
index 2f0d6013..faf95e5c 100644
--- a/src/yugecin/opsudance/states/EmptyState.java
+++ b/src/yugecin/opsudance/states/EmptyState.java
@@ -23,6 +23,8 @@ import org.newdawn.slick.Graphics;
 import yugecin.opsudance.core.DisplayContainer;
 import yugecin.opsudance.core.state.OpsuState;
 
+import java.io.StringWriter;
+
 public class EmptyState implements OpsuState {
 
 	private int counter;
@@ -92,4 +94,10 @@ public class EmptyState implements OpsuState {
 		return false;
 	}
 
+	@Override
+	public void writeErrorDump(StringWriter dump) {
+		dump.append("> EmptyState dump\n");
+		dump.append("its green\n");
+	}
+
 }