Have you played since they added a couple of XML windows to the newui? And do you have EQUI.XML in your custom UI folder.
This was the largest contribution to kick to desktop recently.
Which version of MacroQuest are you running (and before you say
the latest just check), version should be 11th Jan 2003, and can be found
here.
The current offsets are 29th Jan 2003, as posted by MOTD2K on the first page.
Have you renamed MacroQuest.ini.dist to MacroQuest.ini ?