[Mobhack]

The GOTO function takes you to the specified slot, with the relevant game selected ready to save or load etc. as per the action being done, in your case saving a file.

At that point it is in the wait for keyboard input for a file name just as if you had clicked the slot with the mouse in a regular save.

While waiting for a string, it will accept only characters in the red file name field with RETURN to accept the current file name, or ESCAPE to get you back to the save screen to select another file slot etc.

If this was the cause of your"freeze" then in future -
- enter a new file name if desired (typing characters, using backspace or delete etc)
THEN:
- press ENTER to save the file with the current file name and close the save screen
- press ESCAPE to return to the main save game screen without a save