Have you read the sticky? Have you cleared the "jos_menu" table from orphaned "uddeim" entries (its a bug in Joomla that it creates false entries sometimes)? Then install "_j16_english_only" package from a local folder.
It is not a uddeIM problem, so when above fails use a fresh installed Joomla 1.7 to install uddeIM 2.5beta.
uddeIM & uddePF Development
CB Language Workgroup
CB 3rd Party Developer