I have (3) Whistler ES-1098 scanners. I use the same program with the same CDAT_V folder(s) for each scanner. With one scanner, I get "Error Copying PL004.DAT" with the other scanner I get "Error Copying PL012.DAT" and with the last scanner I don't get any Copy Error message. I simply click OK for the two with the Copy Error message and they finish programming with no other issues. All three scanners seem to work fine but I'm afraid I may be missing something with the two that display the Copy Error message. I don't understand why there are two with different error codes and one without any error code yet all three have the exact same program. Can anyone define what these PLXXX.DAT error codes mean and how I can correct them?