can't run the bro 0.6 successfully

   I follow these steps to compile the bro.
     make install
    ./bro -i eth0 //note: eth0 is my netcard
   but there is nothing appear in the screen. So I debug the program ,
I found it loop in the function yyparse( ) in line 220, no
longer go out from the yyparse();
what caused these?