You should post the error log that should be in /home/root or in /media/hdd folder, so we can understand where it fails.

But perhaps it's better you try the JAM 5.2 version instead, at the level of the functionnality, there is no differences.

http://www.ourdreambox.com/ubbthreads.php?ubb=showflat&Number=1377#Post1377

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