I just tried to see how to Cpcdiskxp load this image. Here is the result :
[attachimg=1]
So Cpcdiskxpload load it exactly as the HxC software, and i am sorry to say that the track 15 can't fit a true disk track ! This is just impossible.
To fit all these sectors, the track must be 2 seconds long !!! a normal track duration is 0.2 second.
In fact the HFE have all the sector, but the track reading is so long that there is an index timeout or something like this.
The Cpcdiskxp floppy version will have the 0.2ms timing, but the protection check will fail cause all sectors can't fit the track 15. I will check this now