@Override
 public String getErrorMessage() {
   try {
     ZendScript.getDefault();
   } catch (InvalidPhpExecutableException ex) {
     return NbBundle.getMessage(ZendPhpModuleExtender.class, "MSG_CannotExtend", ex.getMessage());
   }
   return getPanel().getErrorMessage();
 }
 @Override
 public String getErrorMessage() {
   try {
     PhpInterpreter.getDefault();
   } catch (InvalidPhpExecutableException ex) {
     return ex.getLocalizedMessage();
   }
   try {
     SymfonyScript.getDefault();
   } catch (InvalidPhpExecutableException ex) {
     return NbBundle.getMessage(
         SymfonyPhpModuleExtender.class, "MSG_CannotExtend", ex.getMessage());
   }
   return getPanel().getErrorMessage();
 }