As we discovered today, we can have a script open the debugger. We can check the menu in FileMaker and if the debugger is not visible, we show it: 

#The menu command as we got it from Menubar.ListMenuCommands

Set Variable [$DebuggerMenuID; Value:49260]

#Do we have a debugger?

If [MBS( "Menubar.HasMenuCommand"; $DebuggerMenuID ) = 1]

#Is it activate already?

If [MBS( "Menubar.IsMenuCommandChecked"; $DebuggerMenuID ) = 1]

#debugger already visible

Else

#show debugger

Set Variable [$r; Value:MBS( "Menubar.RunMenuCommand"; $DebuggerMenuID )]

Pause/Resume Script [Duration (seconds): ,1]

End If

End If

#now follows your script that should always run in debugger