after pulling, shelving, stripping hg unshelve returns error

[Uwe Brauer]

Hi 

Here is the scenario

    1. I pull

    2. I notice that I did not run hg status, and turns out that I have
       modified files. I run

    3. hg shelve

    4. Hg strip -r XXXX

    5. Hg unshelve

But now hg tells me hg unshelve
unshelving change 'default-02'
abort: 00changelog at 639df2b77c97ec51dc31ab574a5d5f235ad83bac: unknown parent


Any idea what to do?


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