The Erie Canal Harbor Development Corp. has retained Philadelphia-based Global Spectrum to maintain, promote and run events inside the Canalside footprint. Global Spectrum, whose bid for a three-year pact was approved by the state agency in January 2014, got the go ahead to work on programming Canalside events for the 2015-2016 season, which begins on April 1. Global Spectrum will be paid an amount not to exceed $2,449,121. That sum is 42 percent more than the company's original bid but it is…