I have the same Problem here: it won't load under Fritz11 and also not under ChessBase9.
(Win XP SP3, 32-bit, Athlon XP 1800+)
Edit: I will try under my Core 2 Duo 6850.
Edit2: It works with my C2Duo

Regards
How large was the Hashtable?I ran the MGV77 again :
1) Longer time control : 20 min/position (sill on an AMD 4200+