It is possible that when you start your application that you get a blank screen. In general there are two reasons that this might happen:


1. You have not selected the application to run, or you run a module without rights. In that case the main application will be started, which by default is blank.

2. You have not assigned a data source to your form while using a database connection. If you use a databse, then a form requires a data source in order to be able to render your components.  This should be the data source of the main/master table that is in use. If you forget to assign this data source then you will get a blank screen. If you only have a connection on your form, and you are not using it, remove it from the form, and it will render correctly.