4.0.0.
It's not fixed there:
protectedvoidrejectIncomingFileTransfer(FileTransferRequestrequest)throwsNotConnectedException{
StreamInitiationinitiation=request.getStreamInitiation();
IQrejection=IQ.createErrorResponse(initiation,newXMPPError(XMPPError.Condition.no_acceptable));
connection().sendPacket(rejection);
}