Hi,
I have no idea since there have been no code change.
Do you use a SEF component that includes uddeIM?
Have you tried to clear the cache (when you use one)?
Please also try to recreate the menu link to uddeIM. If this fails please deinstall and reinstall uddeIM and create a complete new menu link.
uddeIM & uddePF Development
CB Language Workgroup
CB 3rd Party Developer