Article ID: 112873, created on Nov 24, 2011, last review on May 11, 2014

  • Applies to:
  • Plesk


The migration of a subscription from one server to another using "rsync" fails with the following error:

Assertion failed: files.size() == 1


This happens when you use an "rsync" version that is different from the one that is recommended by the vendor of your OS.


  1. Use the "rsync" version recommended for your OS.

  2. Update current "rsync" version to the latest available one:

    #yum update rsync

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