Can't save user data

oops. did not escape the code. Here is the initial message.
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Just downloaded the latest version.

First, there is an extra <?php right before the first function, after removing it the user_tags configuration went well. The categories showed up at the user profile page, however, no data is saved when user hit the submit button.

Running with :
Drupal 4.7.4
MySQL 4.1
PHP 5

otherwise, this is a great module should be very useful. Thanks!

ok. But I only need this for 4.7.