From 2015 onwards, please see this other profile "User_Trackers" (note the ending "s" from the plural word) which does create working instances of User Trackers with many more fields for you to get started more easily:
User_Tracker profileThis mini profile creates basic User Tracker. Can be required and included by other Profiles. It also creates one mandatory field for the user login name which is necessary to make the user tracker work properly. It has modular concept so the other fields can be included as profile dependencies and are completely optional. Feel free to create your own fields for this User Tracker profile as "Profile snippets" and then call them via dependencies together with this profile from your own profile.
PreferencesMake sure Trackers feature is on:
preferences: feature_trackers: y
The User Tracker
objects: - type: tracker ref: user_tracker data: name: $profilerequest:User Tracker Name$User Tracker$ description: $profilerequest:Tracker Description$Additional information about users$ default_status: open allow: [ one_item_per_user, creator_modification ] hide_list_empty_fields: y show: [creation_date, modification_date, list_modification_date ] sort_default_order: asc
General Fields (Mandatory)
objects: - type: tracker_field ref: user_name data: name: $profilerequest:User Login Field Name$User Login$ tracker: $user_tracker type: user flags: [ searchable, public, link, list, mandatory ] options: 1