This happened with 0.57 too.
Stats are not shown in the Hand-Overview panel.
If I activate Stats I get: "Known players: keine"
If I check 'Only Known Players' I get: "?addPlayer: Hero" which does nothing when I click Hero.
Checking 'Only Flop Players' does nothing.
Checking 'Only Known Players' and 'Only Flop Players' I get something like: "?addPlayer: Hero CO BB MP3 SB", but clicking any of them does nothing.
And stats are never exported.
I've just found that if I activate Stacks too everything works fine.
Btw, when did hand replays stop working again?