(adsbygoogle = window.adsbygoogle || []).push({}); Got stuck after mission 40, already did all main quests.. I dont receive more missions or anything else to do..
EDIT : Nevermind.. Just do all side missions and you will receive more !

yap, always check your side-ops and do all, it will happens also for mission 45 that you have to do side-op nº 150

glad you figured it out, gotta love metal gear solid..!
been playing it since nintendo