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In ArcCatalog, creating an XML workspace with the X-Ray for ArcCatalog add-in installed prompts the following error message,
Error: "Could not load file or assembly 'office, Version=18.104.22.168, Culture=<neutral>, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannot find the file specified."
X-Ray for ArcCatalog requires Microsoft Excel for full functionality. The following are possible causes for this error:
Install the corresponding version of Microsoft Excel and reinstall the X-Ray for ArcCatalog add-in.
Note: Add-ins are not backward compatible. For example, add-ins targeting version 10.1 do not work with version 10.0, but work with version 10.2.
Note: Another component to consider installing when dealing with Microsoft Office components is the 2007 Office System Driver, which resolves a number of interoperability issues between Excel and ArcGIS. Find the download here, 2007 Office System Driver: Data Connectivity Components.