What was supposed to be a swanky Summit Avenue fundraiser for Sen. Al Franken tonight was abruptly canceled when Franken discovered that the would-be host of the St. Paul event had served a year in prison for swindling some northern Minnesotans, including a Catholic priest. Mark Erjavec, who describes himself as an entrepreneur specializing in distressed real estate, may be a newcomer to the political scene, but he is well known in the courtroom.