OK…it happens. It happens a lot. Best if the mistake is caught early on. Cornwall Warehousing, Inc. v Lerner 2019 NY Slip Op 02825 [171 AD3d 540] April 16, 2019 Appellate Division, First Department.
“Plaintiffs demonstrated a reasonable excuse for their default (CPLR 5015 [a] ), based on law office failure, as detailed in the