// InstallChangeCtrl.checkInstallChange(data); // <- much earlier!
if (data.isChangeInstallation()) {
panel.setDirectory(data.getInstallDir());
panel.disableDirectoryField();
panel.disableBrowseButton();
// Maintenance mode
if ( data.sameVersionExists() ) {
String dialogTitle = ResourceManager.getString("String_ChooseDirectory1_Maintain");
panel.setTitleText(dialogTitle);