email_re has moved from django.form.fields to django.core.validators (Django 1.2 alpha 1)
from django.contrib import admin
from cm.models import *
admin.site.register(Text)
admin.site.register(Role)
admin.site.register(UserProfile)
admin.site.register(UserRole)
admin.site.register(TextVersion)
admin.site.register(Email)
admin.site.register(Activity)
admin.site.register(Notification)