Servoy 3.5 rc7

Hi

I am getting this error message. How to upgrade the server (and what exactly IS the serrver anyway?). Up to now I upgraded the Developer on the server, implicitly upgrading the server thereby (at least I thought that up to today).
What do I need to do?

Error Message:

Error connecting to the multi developer server: 10.0.1.2:1200

When pressing the button Details >>:

com.servoy.j2db.multi.b: Developer version is newer then the server, upgrade the server or downgrade the developer

Best regards, Robert

PS: I can’t figure out what the auto update note in: We announce the immediate availability of Servoy 3.5 rc 7
means. My existing servoy_server.sh file was not overwritten so where is the new one? Thanks for help.