In Hilton Head roof case, admission of improperly-disclosed expert testimony is harmless error, but trial court errs in measuring damages

In Sea Side Villas II Horizontal Property Regime v. Single Source Roofing Corp., the Fourth Circuit found no error in the admission of expert testimony despite irregularities in the manner of their disclosure, but also reversed on damages because the trial court failed to apply the proper measure under South Carolina law, which was the reasonable cost of repairing the bad roof.