There was an unexpected error: Mismatch of expected md5sum

This question is in reference to Atlassian Documentation: HipChat Server Release Notes

Trying to update because of the critical security vulnerability, and got this error

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Had the same problem.  Ended up fixing by running the following :

  • sudo dont-blame-hipchat
  • cd /file_store
  • mv temporary temporary_old
  • mkdir temporary

It seemed that the HipChat server had downloaded an incomplete upgrade version and whenever the update was run again, it tried to verify the already downloaded version and couldn't.

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