Alan, Yes. Same here on my two factory images. But the menu 40 reset image I have loads OK. The factory image that I set the CTCSS tones to 0xff, 0xff loads OK. That's why I wanted you to try starting by download an image after a reset and then try to edit you channels into it and see if it would upload.
Jim
When I load the py file all the frequency entries are 0 and an error is indicated. If I try to edit a row it will not pop up the editor window but it will let me enter things in individual fields.