If you find that the Build Applicaltion option is grayed out (see below), you may not have the correct developer license to build applications with 4D.



According to the following excerpt found at https://us.4d.com/4d-development (see below), you will need a 4D Developer Professional license or higher in order to build applications.*



If you are not sure if you have the correct license, would like to obtain the 4D Developer Professional license, or upgrade your current 4D Developer Standard license, you may contact your sales representative.

*The link will redirect you to the 4D US website; you may change to your country's 4D website at the bottom of the page.