To all people that are gettin HTD in middle of the game, try avoiding pressing F in the game, as sometimes it might cause HTD (Atleast it does for me) , and for people that IDs doesnt change, reopen s4 again, and dont touch the IDM till you log in your account, and make sure you click save ids after you tick and choose all the items you want, then rejoin the server, and for people that doesnt s4 doesnt start, it happened to me, you just have to keep tryin till it starts...
Oh and also, make sure you run the IDM from the new injector in s4 folder, which is V3.0 , not the old one, which is v2.0, since the new IDM doesnt make a shortcut for itself on the desktop