Upgrade to 6.0

I am getting an exception when I try to upgrade to 6.0I loaded all the files and it won't let me log back in.Tomcat 5.5 won't load.Trace logger error, class not found issue.Please help!Thanks
[235 byte] By [bigbenny2391a] at [2007-11-26 15:32:08]
# 1
Check with Mark Clark
ArchiePatricka at 2007-7-8 21:49:03 > top of Java-index,Web & Directory Servers,Directory Servers...