It may sound silly, but I'm not entirely certain which code is running. I've done the install to run the HDR code but when the Hummy reboots it still reports that it's running software version KZTFT 1.02.20 which is the HD version. If it was running the HDR version then it would report FHTCP 1.02.20. So, the runHDRmode script is not working as it should. That would explain why the copy function fails. I'll have to investigate some more.