WATKINS GLEN - Woodstock 50, the anniversary concert event planned for Watkins Glen International in August, has been canceled, according to Timothy O'Hearn, administrator for Schuyler County, where the three-day event was scheduled to be held."I received notification a little before noon today," said O'Hearn on Monday, expressing disappointment.He learned of the cancellation in a phone call from the festival's financial partner, Dentsu Aegis Network.