diff --git a/src/org/hwo/models/TableMapper/TableMapper.java b/src/org/hwo/models/TableMapper/TableMapper.java
index c92282b..077e1fc 100644
--- a/src/org/hwo/models/TableMapper/TableMapper.java
+++ b/src/org/hwo/models/TableMapper/TableMapper.java
@@ -438,10 +438,7 @@ public class TableMapper extends AbstractTableModel
 		for (ColumnInfo ci: p_columns){
 			minwidth += ci.getWidth();
 		}
-		
-		//jTable.setMinSize(new Dimension(minwidth, 24));
-		jTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
-		
+				
 	}
 	
 	public boolean isSortingEnabled() {
@@ -754,7 +751,12 @@ public class TableMapper extends AbstractTableModel
 		} else {
 			this.p_rows.add(row);
 			fireTableRowsInserted(this.p_rows.indexOf(row),this.p_rows.indexOf(row));
-		};		
+		};
+		
+		if (TableMapperValue.class.isInstance(row)){
+			TableMapperValue tmv = (TableMapperValue)row;
+			tmv.assignTableMapper(this);
+		}
 	}
 	
 	public void addRows(Object[] rows,Object before){
@@ -788,7 +790,7 @@ public class TableMapper extends AbstractTableModel
 		{
 			if (TableMapperValue.class.isInstance(row)){
 				TableMapperValue tmv = (TableMapperValue)row;
-				tmv.assignTableMapper(this);
+				tmv.unassignTableMapper(this);
 			}
 			this.p_rows.remove(index);
 			fireTableRowsDeleted(index, index);
@@ -964,9 +966,12 @@ public class TableMapper extends AbstractTableModel
 	
 	public void signalRowChanged(Object row){
 		if (p_rows.contains(row)){
-			fireTableRowsUpdated(p_rows.indexOf(row), p_rows.indexOf(row));
-		}
+			log(DEBUGDETAIL,"TableMapper: signalRowChanged(): received signal for existing row");
 
+			fireTableRowsUpdated(p_rows.indexOf(row), p_rows.indexOf(row));
+		} else {
+			log(ERROR,"TableMapper: signalRowChanged(): received signal for non-existing row");
+		}
 	}
 	
 	class TableCellRenderer extends DefaultTableCellRenderer {