Unable to delete the snapshot: "unable to complete the operation"

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Symptoms

I am unable to delete snapshots of my virtual machine. Parallels Desktop displays the following error:

    Unable to complete the operation

    The files required for the operation could not be found.
    Problem ID: 19014

Cause

Virtual Machine's misconfiguration

Resolution


Warning: We strongly recommend to create a backup copy of your Virtual Machine before applying the solution below!

Please take into account the size of virtual machine comparing to free space on Macintosh HD.


Once you created a backup copy, please proceed with the following:

  1. Locate your Virtual machine in Finder

  2. Right click on the *.pvm file of your virtual machine -> choose Show Package Contents

  3. In Mac OS X, go to Applications > Utilities and launch Terminal. Type the following but do not execute:

    prl_disk_tool merge --hdd 
    
  4. Drag the *.hdd file into Terminal and drop it right next to "prl_disk_tool merge --hdd ". In Terminal you will see something like this:

    prl_disk_tool merge --hdd /Users/Username/Documents/Parallels/Windows\ 7.pvm/Windows\ 7-0.hdd
    

    Note: There should be a space between '--hdd' and 'Users/Username...'

  5. Press Enter/Return key to run the command and merge the snapshots.

  6. In the same directory (inside Virtual Machine's bundle) delete Snapshots.xml file
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