Today I faced this problem to upgrade 4D Server 18R2 public version on HighSierra.
4D Server 18R2 beta was already installed and worked without problem. After downloading the public 18R2, Apple says me ”you should place your application in the trash can, it is corrupted”. But in the same time, regular 4D launches quietly.
4D server has no plugin installed. When installing 4D internet commands inside the dedicated folder of 4D server you modify some checksums and 4D server appears to be broken.
The good pratice for macOS:
- do a first run of server
- if OK, quit
- intall all your stuff