Giving up too much by not reraising river???

[WallyWattz]

I thought it was kind of fishy that the first position player was check calling the whole way and cold calling two bets and then leads out on the river. I thought he could have been slowplaying a set or maybe hit a straight on the end. Should I have reraised the river?

Party Poker (9 handed) converter

Preflop: Hero is MP2 with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">6 folds</font>.

Flop: 7[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks.

Turn: A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, BB checks.

River: T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
.

Final Pot:

I'm not sure why it isn't showing all the bets on each street. I am using bison's hand converter. Anyone know what the problem is?