It appears that Adobe has made a recent change so that when installing Adobe Acrobat Pro, it removes Adobe Reader, and subsequent attempts to install Adobe Reader fail. I don’t personally care to dig into this very deeply, I just don’t want to hear about the errors. So my StandardApps manifest now has this:
<key>conditional_items</key>
<array>
<dict>
<key>_note</key>
<string>Adobe Reader cannot be installed if Acrobat Pro is installed</string>
<key>condition</key>
<string>ANY applications.bundleid == "
com.adobe.Acrobat.Pro"</string>
<key>managed_uninstalls</key>
<array>
<string>AdobeReaderDC</string>
</array>
</dict>
<dict>
<key>_note</key>
<string>Adobe Reader cannot be installed if Acrobat Pro is installed</string>
<key>condition</key>
<string>NOT (ANY applications.bundleid == "
com.adobe.Acrobat.Pro")</string>
<key>optional_installs</key>
<array>
<string>AdobeReaderDC</string>
</array>
</dict>
</array>
The intent here is that if Adobe Acrobat is currently installed, Reader is removed and not available as an optional install. If Adobe Acrobat is not currently installed, offer Adobe Reader as an optional install.
Hope this is helpful to some!
-Greg