One of Aruba’s wealthiest and most powerful families alleges that a partner at its longtime law firm, Podhurst Orseck in Miami, made an error in judgment that led to the loss of a $15 million property.

Five members of the Mansur family, who have Dutch citizenship and business interests in Aruba, filed suit in Miami-Dade Circuit Court in March alleging that Podhurst partner Katherine Ezell mishandled their lawsuit against two family members entrusted with managing Terminal Island in Miami Beach. That’s a deep port off the MacArthur Causeway that serves as a ferry terminal for the exclusive Fisher Island community off Miami Beach.