🚀 go-pugleaf

Can anyone tell me what's wrong with the following commands:

%===========================================================

\author{M. Chen\footnotemark[1] ~~and M. Comeau\footnotemark[2] }

\footnotetext[1]{ Dept. of Civil Engr.}
\footnotetext[2]{ Dept. of Appl. Math.}

%===========================================================


Instead of producing number "1" and "2" for the authors (M. Chen and 
M. Comeau), it gives special symbols such as "*" and "+" (\dag). 

The strang thing is that the numbers do get right for the bottom note.

Thanx in advance.

/ming