i have a piece of advice that complements everything suggested already by our friends above. if you do need to install the 1.4b patch, make sure its the right one. there are several 1.4b patches available, made different by 2 criteria: (1) whether your version of sh3 is a dvd or has been downloaded; and (2) where in the world you are. for example, my game is on dvd and i live in the uk, so therefore i use the european dvd version of the patch.
im sure youve probably got the correct version already tho