XDVI Dies with "Unknown Character" Error
This happens when you use postscript fonts (such as timrom or newcen)
which xdvi can't deal with. The easiest solution is
to use the xdvi from sipb which doesn't die when it
hits a problem like this. Type:
attach sipb
/mit/sipb/$bindir/xdvi filename.dvi &
Alternatively, you can preview if you take out the postscript font.
Just remove the timrom or newcen and continue on. When you want the
final printout, reinsert the documentstyle option and latex it once
(or twice if you have references) before you print it. The page count
will probably be different, but it should look mostly the same.