After upgrading my Moodle 1.8+ (2007-04-13) to 1.8+ (2007-04-18), it is no more possible to edit the user profile. I get back an empty page. An Update to todays version (2007-04-20) did not solve the problem.
Replacing folder "user" with my old version from 2007-04-13, everything works ok.
Debug error messages as attachment.