Engines aren't much good at openings. That's why they all have opening "books" loaded so they don't have to evaluate the position. Sounds like no book is currently loaded. I remember for many months the computer analysis didn't have one and it was calling well recognized openings blunders.
Something similar must be going on. Have you tried V3 yet? There's a 10 level computer over there which seems to be doing a decent job. Just go to the bottom of the page down by the green pawn and click on Try the new Chess.com. There's even a coach function you can turn on.
sometimes when i play chess with chess.com computer it show 1st white move d4 a blunder can some one tell me why