While importing a CRM Solution, it can happen that the following error appears as a “result” of the solution:

Found more than one RibbonDiff entity

This is a bug in CRM which duplicates the <RibbonDiff> tag in the customisations.xml file. To make it back to normal again,

  1. Open the customisations.xml file from your solution;
  2. Clear all the data from between the <RibbonDiff> and </RibbonDiff> tags;
  3. Import the solution again. The Ribbon should look like the default ribbon after a new installation of CRM.
  4. Import the original solution again;
  5. Publish All Customisations

Normally everything should be back to normal with a beautifull customized ribbon.

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