Using profile2 and Profile2 Registration Path. If an user edit his profile, he gets an error after saving the profile (with or without adding any changes to the profile fields).

    Notice: Undefined index: profiles in profile2_form_validate_handler() (line 428 of /sites/all/modules/profile2/profile2.module).
    Warning: Invalid argument supplied for foreach() in profile2_form_validate_handler() (line 428 of /sites/all/modules/profile2/profile2.module).

I added a term reference to a taxonomy vocabulary, that looks related with the problem. The select field (using chosen) works fine but after editing and saving the profile the error above is displayed. Anyone having similar issues?