diff -r f99f51bc5bea -r 51a134a8c89b core/src/luan/LuanException.java
--- a/core/src/luan/LuanException.java	Mon Apr 18 15:46:05 2016 -0600
+++ b/core/src/luan/LuanException.java	Mon Apr 18 17:02:16 2016 -0600
@@ -6,32 +6,44 @@
 import java.util.ArrayList;
 
 
-public final class LuanException extends Exception {
+public final class LuanException extends Exception implements DeepCloneable {
+	private LuanTable table;
 
 	public LuanException(String msg,Throwable cause) {
 		super(msg,cause);
+		initTable();
 	}
 
 	public LuanException(String msg) {
 		super(msg);
+		initTable();
 	}
 
 	public LuanException(Throwable cause) {
 		super(cause);
+		initTable();
+	}
+
+	private LuanException(String msg,Throwable cause,int nonsense) {
+		super(msg,cause);
+	}
+
+	@Override public LuanException shallowClone() {
+		return new LuanException(getMessage(),getCause(),99);
+	}
+
+	@Override public void deepenClone(DeepCloneable dc,DeepCloner cloner) {
+		LuanException clone = (LuanException)dc;
+		clone.table = (LuanTable)cloner.get(table);
 	}
 
 	public LuanTable table() {
-		LuanTable table = new LuanTable();
+		return table;
+	}
+
+	private void initTable() {
+		table = new LuanTable();
 		table.rawPut( "java", this );
-/*
-		for( StackTraceElement ste : luan.stackTrace ) {
-			LuanTable tbl = new LuanTable();
-			tbl.rawPut( "source", ste.call.source.name );
-			tbl.rawPut( "line", ste.call.lineNumber() );
-			tbl.rawPut( "call_to", ste.fnName );
-			table.rawPut( table.rawLength() + 1, tbl );
-		}
-*/
 		LuanTable metatable = new LuanTable();
 		table.setMetatable(metatable);
 		try {
@@ -50,7 +62,6 @@
 		} catch(NoSuchMethodException e) {
 			throw new RuntimeException(e);
 		}
-		return table;
 	}
 
 	public void throwThis() throws LuanException {