I created a TDS package of a project and wanted to install it on a fresh Sitecore instance. At the end of the installation I get this message:
What does this error mean? What is this "DeployedItems.xml"?
From my recollection, the DeployedItems.xml is a file created by TDS in the _DEV folder to track which items were installed. Are you running Sitecore 8 Update 3? Did you include files in the package?
If so, the following link might provide you details on the issue: http://www.hhogdev.com/blog/2015/may/sitecore-update-installation-wizard-error-in-sitecore-8-update-3.aspx
From that post:
To resolve the issue, you need to add a few lines to the Sitecore web.config.
Locate the
<configSections>
element at the top of the web.configAdd the section "
<section name="sitecorediff" type="Sitecore.Update.Configuration.ConfigReader, Sitecore.Update"/>
"Right after the close of the element add "
<sitecorediff/>
" element
TDS 5.1.0.9 contains the fix for this issue, so if you are on a version below that, you may want to update your TDS version.