On MA3, navigate through Menu > In & Out > OSC. On the top of this view, you will have two big toggle buttons: "Enable Output" and "Enable Input" - make sure you enable both.
It is not possible to have 2 applications listening to the same port In the same computer. Therefore, unlike the console/desk case, we need two rows in the table: one for input (ShowCockpit -> MA3) and another for the output (MA3 -> ShowCockpit).
In the example above, we have set the following settings:
After adding the MA3 - OSC element to your project, you will need to tweak a few options before enabling the element.
Leave this as the "loopback IP" since we are running in the same PC
Outgoing from ShowCockpit to MA3 (input in MA3)
Incoming on ShowCockpit from MA3 (output in MA3)
After setting the correct configuration, you should be able to connect to the MA3 OnPC by enabling the MA3 element.