It seems to be reloading a scheme code sometime gives problem. I have a
scheme program file which loads in other scheme code and does some
initialization thing, and I have no problem load it in the interactive
mode, and run it. However, if I change some file, and reload, the
symbols I defined go away, and sometimes, even quit, which I didn't
overload, symbol cannot be found. Does anyone has this problem? Btw, I
am using guile 1.6.4 on cygwin standard release.