R help - Jun 2004 - fl_show_fselector

Hi everybody, 

I new to xforms and I'm trying to use fl_show_fselector. In fact I did it 
without any problem. But now I'm getting "segmentation fault" in
the line of
code:

filename =fl_show_fselector("Select file to
open",".","*.off", "");

the message is:

In SetFont [fonts.c 224] Bad FontStyle request 0: 
Segmentation fault (core dumped)


I'm wondering what is happening here. Can anybody help me?

Thanks a lot,
                 Dimas