A state appeals panel has reversed the dismissal of a personal-injury lawsuit against a contractor in a Loop high-rise construction project. The plaintiff, Roger Lederer, was an employee of Westchester-based Alliance Drywall and Acoustical Co., a subcontractor on a multiple-floor project for BMO Capital Markets in the Harris Bank Building at 115 S. LaSalle St. Alliance was hired by the site’s general contractor, Executive Construction Inc., to install drywall. On his second day working at the project, Lederer …