oh I had this problem too. Can't login. Saying member doesn't exist but the member actually DOES exist. Go to u're Members directory
find a file called memberlist.cgi
make sure there are not characters that look like a square. If there are, delete the square. Also, check u're memberfile. That is, if u're member 00000001, check 00000001.cgi. Make sure all the info in it are not corrupted.
