// Check, if at least one application module was selected for installation
                // (not necessary, if an older product is updated or additional modules are
                // added in maintenance mode).
                
                boolean applicationSelected = false;
                if ( data.olderVersionExists() || data.sameVersionExists() ) {
                    applicationSelected = true;            
                } else {
                    data.setApplicationModulesChecked(false);
                    ModuleCtrl.checkApplicationSelection(packageData, data); 
                    applicationSelected = data.applicationModulesChecked();