One more place where the db needs to be locked before beginning a transaction

api/src/com/todoroo/andlib/data/DatabaseDao.java

@@ -234,6 +234,7 @@ public class DatabaseDao<TYPE extends AbstractModel> {
             if (toUpdate.getCount() == 0)
                 return 0;
 
+            synchronized (database) {
                 database.getDatabase().beginTransactionWithListener(new SQLiteTransactionListener() {
                     @Override
                     public void onRollback() {
@@ -258,6 +259,7 @@ public class DatabaseDao<TYPE extends AbstractModel> {
                 } finally {
                     database.getDatabase().endTransaction();
                 }
+            }
             return result.get();
         } else {
             return database.update(table.name, template.getSetValues(),