That is odd... Since I moved my CM15A about 30 feet away by way of 2 USB extension cables I have gotten that error, sometimes 3 times back to back. When I click on it to close it, it runs the download process and all is fine. It has never corrupted my .ahx file nor has any of my many macros failed to run. My guess is that the computers USB port momentarily looses communication with the CM15A and that causes the error. Mine mostly happens when I'm viewing or controlling one of my cameras. I would further guess that if one of the macros was in the middle of executing it could corrupt the .ahx file. Perhaps I have been lucky so far but as everyone says... Back up your .ahx file everytime you make a change.
(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)---(http://www.bdshost.com/X10/lpup.gif)----KDR