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So I decided to restore but I got an error

  Unable to copy file ./dalvik-cache/system@framework@core-junit.jar@classes.dex
    Error while restoring /data!
    I: Can't partition unsafe device: /dev/block/mmcblk1p1
    I: Can't format unknown volume: /external_sd
    I: Can't partition unsafe device: /dev/block/mmcblk0p6

What seems to be the problem?

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Have you kept all the blobs under clockworkmod/. The real content of files to restore seems to reside there (deduplicated between different versions of the backup), and I got such an error when I didn't put all the blobs from the time I made the backup into place. – imz -- Ivan Zakharyaschev May 14 '13 at 12:41

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