No solution, but I can confirm that the problem exists. After a long and
happy time time with the original firmware, I tried installing rockbox.
I followed the instructions in the wiki, tried it with two firmwares and
three rockbox distributions, read the posts on misticriver and here, and
still get the same error as bobo22. .rockbox is there, but the bootloader
says it is not. I have recently reformatted and checked my HD, so I do
not think it's a file system problem.
Any news on that? Otherwise, it was the start and end of my rockbox
experience on the same day :'(