(I cut out my stupid prior comments, I CAN tend to get dramatic with booze ..type fast and peeved..at least I admit it!)
A fix or acknowledgement of this exact "weird" problem in BOOT CAMP is not addressed in the answers to this guy's questions. I have it.
Solution is positioning at the correct firing position to the right of the Ammo box were the very light yellow (should be brighter), and hard to see marker demands you to be. Then it will work.
It is ONLY a barrier "bug" for many beginners to such a professional level game as old OFP was. I want the intro to the game for beginners to be as smooth as they are used to.. my son just saw a YOU TUBE in Germany on the game and was WOWED and I bought the whole package for him and fear these frustration points can blow off SO MANY CASUALS which should become players at the level of WOW and all this other crap most like.. GOTTA be wise and watch a new buyer get stopped on stupid points.
I have seen a lot of beginners give up at two points in learning this game.
They go to the firing range pick up ammo and start shooting over the sandbags. Then the test starts and they get the razz and start again over and over like the guy said. He just went to the right place the 2nd time. The bots should say move to the firing position.
Other spot is after the SMAW/Javelin training where you elect to start MOUT and have no AMMO for your rifle. Finding the correct box around there and locating magazines is NOT SMOOTHLY OBVIOUS FOR BEGINNERS. Again the BOT should tell one to go get ammo and where.
They are not bugs .. just not beginner friendly, frustration failure, give up points for the game.