There are 2 types of applications:
1 - Built-in applications: they are already installed on your Robot and cannot be deleted. Built-in applications are managed by Aldebaran Robotics.
2 - Downloadable applications: they are downloaded by the user and can be deleted.
1 - If the application is a downloadable application: check if an update is available or if the version you downloaded is compatible with your Robot. If not, update the application, or download a compatible version.
If the application is up-to-date and compatible with your Robot, delete it and install it again. If the problem persists, report the issue on the application's page and/or contact the author of that application.
2 - Regarding built-in applications, please contact the Customer Care.