Menhir problem

[reswatson]

My make file doesn't run unless I add these lines to the .mly file:

%start <Expr.expr> parse_expr

%type <Expr.expr> parse_expr
%type <Expr.expr> term
%type <Expr.expr> app_term
%type <Expr.expr> atomic_term
%type <Expr.expr> lambda

%%