Am I going mad perhaps? Maybe missing the blatantly obvious or havnt read some important instruction or fact somewhere?? I dont know anymore and am starting to question my basic undertanding of the game of chess, or perhaps my mind is starting to fail at the tender age of 42

I decided to try Fritz12 Training exercises after watching the Chessbase Workshop video by Steve Lopez covering the use of the 'Attack Training' feature in Fritz12
http://www.cblivestreams.de/cbw2009_1108I start using it as shown in Steves Video tutorial and all is well for the first couple of rounds, then I fail a round and the trainer highlights an obvious square that I swear I had highlighted??; I continue and this happens again?? Maybe I am losing my mind..
The next try then throws this at me

The trainer fails me on the pawn on c3? I thought the idea was that this pawn has to be under some sort of threat? I dont see a threat to this white pawn?? Am I missing something here? As far as I can see there is no threat to the white pawn on c3.
So, I think that possibly I'm missing the point of the exercise and am not fully understanding the rules.. so I open the help file and find the section on 'Attack Training' to see what it has to say.
I'm then confronted with this help explanation which then throws me completely

The text, as I hope you can see, is suggesting that in the example a white bishop on g5 is being attacked by a pawn on h6 and should be marked thusly???
Can someone confirm please one of the 3 following possibilities :-
1) I'm losing my mind
2) I really dont understand chess and should probably give up
3) Fritz12 has bugs and errors