=== modified file 'dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/startup/TableAlteror.java'
--- dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/startup/TableAlteror.java	2010-05-17 14:01:28 +0000
+++ dhis-2/dhis-services/dhis-service-core/src/main/java/org/hisp/dhis/startup/TableAlteror.java	2010-05-26 15:47:51 +0000
@@ -129,6 +129,9 @@
             executeSql( "UPDATE patientattribute SET mandatory=false" );
         }
         
+        //drop table reporttable_categoryoptioncombos
+        executeSql( "DROP table reporttable_categoryoptioncombos" );
+        
         log.info( "Tables updated" );
     }
     

=== modified file 'dhis-2/dhis-services/dhis-service-reporting/src/main/java/org/hisp/dhis/reporttable/ReportTableDeletionHandler.java'
--- dhis-2/dhis-services/dhis-service-reporting/src/main/java/org/hisp/dhis/reporttable/ReportTableDeletionHandler.java	2010-04-21 14:32:54 +0000
+++ dhis-2/dhis-services/dhis-service-reporting/src/main/java/org/hisp/dhis/reporttable/ReportTableDeletionHandler.java	2010-05-26 15:47:51 +0000
@@ -28,6 +28,7 @@
  */
 
 import org.hisp.dhis.dataelement.DataElement;
+import org.hisp.dhis.dataelement.DataElementCategoryCombo;
 import org.hisp.dhis.dataset.DataSet;
 import org.hisp.dhis.indicator.Indicator;
 import org.hisp.dhis.period.Period;
@@ -129,4 +130,20 @@
             }
         }
     }
+    
+    @Override
+    public boolean allowDeleteDataElementCategoryCombo( DataElementCategoryCombo categoryCombo )
+    {
+        for ( ReportTable reportTable : reportTableService.getAllReportTables() )
+        {
+            DataElementCategoryCombo eachCatCombo = reportTable.getCategoryCombo();
+
+            if ( eachCatCombo != null && eachCatCombo.equals( categoryCombo ) )
+            {
+                return false;
+            }
+        }
+
+        return true;
+    }
 }