Your computer is configured for the standard B&G MS-II code, whereas it needs to be configured for the MS2/Extra code. The error message is telling you your ECU has this MS2/Extra firmware in it, but your computer does not.

Simply download the correct firmware package (http://www.symtechlabs.com/support/knowledgebase/megasquirt:downloads), then run "copyini.bat" to configure MegaTune.

To configure TunerStudioMS, make a note of where the firmware package file you just downloaded is. Then, when you create a new project and TunerStudio asks you for the .INI file, navigate to this folder and select the file titled "megasquirt-ii.ini.ms2extra".