EXIFIR problem

class Photo < ActiveRecord::Base
  belongs_to :album
  after_create :set_exif_data
  has_attached_file :image,
      :styles => {
        :display => "300x200"
        }
  def set_exif_data
    logger.debug "setting exif"
    exif = EXIFR::JPEG.new( self.photo.path )
    logger.debug"setting exif2"
    return if exif.nil? or not exif.exif?
    self.width = exif.width
    self.height = exif.height

is there something wrong here? the first logger.debug runs, but not the
second...