Fatal Error: Undefined Function is_content_profile profile_setup.page_account_category.inc on line 163

Encountered this error when trying to save a photo for the user profile page after registration.

I added a temporary fix to the problem by modifying the code to check if the function exists:
original was:

function profile_setup_page_is_content_profile_type($category) {
  return is_content_profile($category);
}

changed to this:

function profile_setup_page_is_content_profile_type($category) {
  if(function_exists("is_content_profile")) {
    return is_content_profile($category);
  } else {
    return FALSE;
  }
}

After that, picture upload is now working.

However I am not sure if it affects other parts of the user profile.