Én nem látok így bele a Gamestudio belső dolgaiba, csak arra tudok hivatkozni, amit a ticketben írtak:
Here the engine executing the script calls msvcrt.fflush(pointer). msvcrt.fflush() assumes it is FILE structure but it is not. It is some internal engine's structure returned by file_open_write(), no msvcrt / else MS CRT functions are called to execute those other engine's function, the engine works with kernel32.CreateFile() etc. directly.