Problem solved . Although non the wiser why. I reloaded the NT software to the laptop and the download works fine. In answer to Tashinz question, I was trying to download the complete apllication, its just that the first part to download is the memory tables. It was here that the download failed after three automatic attempts. All appeared o.k. except the KB conter did not move from zero. This suggests that the comms was o.k. and that something was preventing the data to download. Anyway, as I said problem sorted. Thanks anyway.