I have the Kitsrus K150 programmer and it has been working great for me - until I tried installing the software for it on another couple of computers. The same programmer and cable will work great on some machines, but not on others. I have even eliminated the board that I am connecting to via ICSP. If you don't have any chip in the programmer and no connection to a target you get an error message about not being able to verify the chip type and a read will result in all 1's - but it still "works". What I am getting is an error message that "The board is not responding. About to apply reset." I am thinking that it is not the programmer, but something probably in the USB driver interacting with different versions of Windows. But I don't know how to narrow this down. I have tried it on the following machines. Windows XP Pro (no SP) Notebook - works 2x Windows ME (unknown SP) - works 2x Windows XP Pro SP1 desktop - does not work Windows 2000 SP3 desktop - does not work Windows XP Home SP1 notebook - does not work Now - all of the ones it does not work on have had the software installed in the last 2 days. The couple of machines I installed this on before that have worked just fine. So - I'm not sure if it is what I am installing, or the type of machines I'm installing it on. I've been downloading both the USB and MicroPro software directly from the websites. I did try both DiyPgmr15 and DiyPgmr16. The DiyPgmr15 is what I had been using before, but the DiyPgmr16 just came out. Thanks for any ideas on how to further trouble shoot this. Is there a way to snoop the messages going over the USB "com" port? Dan -- http://www.piclist.com#nomail Going offline? Don't AutoReply us! email listserv@mitvma.mit.edu with SET PICList DIGEST in the body