DataAbstract for Delphi, latest release build. In uIPAsyncSocket.pas, line 968…
for i := 0 to SocketsPerWorkerThread do begin
…causes i to go outside the range of…
fData: array[0… SocketsPerWorkerThread-1]
Presumably it should be…
for i := 0 to SocketsPerWorkerThread-1 do begin