If you have had any issues upgrading to OS 2.71, try the below:

• if using mIRC 6.2, upgrade to 6.21, or REMOVE AG7 (ag7 & mirc 6.2 are NOT compatible)
• delete channels
• make a new list name, like "Mp3s or Music" (NOT Default)
• add folders to new list
• delete all old lists (when you hit 'delete' WAIT a few seconds, it takes a few for all files to be deleted, and the list name to disappear)
• create all lists, and make sure "masterlist created" is shown in status screen
• join a channel you wish to serve in
• right click, OmenServe, add channel
• if channels do not appear, close os screen, hit <control> F2, to bring up old interface, and add channels there
• turn your server on, should be up now

Do NOT skip any steps, everyone I have talked thru this step-by-step has had a working system