I decided not to use madExcept3, due to the additional size it adds to the exe, so uninstalled it and installed 2.7h. I kept getting "...*.bpl not found..." type messages on opening new projects.
Sorry I cannot be more specific, but I inadvertently clicked the "Do not try to load this file again..." checkbox and madExcept no longer appears in the Projects menu in the IDE, although madExcept does trap IDE errors. I guess it will be a registry entry to fix this - any idea which one?
(1) Uninstall madCollection.
(2) Remove all Disabled Packages keys you can find in the registry.
(3) Reinstall madCollection.
If the menu item is still not there, please check what the list of installed packages said (while no project is loaded). If madExceptWizard.bpl is contained there, but unchecked, please manually check it.