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I'm trying to upgrade an 8.1 install to 8.2. I've followed the steps in the guide so far, including installing the UpgradeInstallationWizard package.

When I select the .update package and try to progress to the next step I get this unhelpful error message,

XML Parsing Error: no element found
Location: http://<mysite>/sitecore/admin/UpdateInstallationWizard.aspx?page=1
Line Number 1, Column 1:
^

The sitecore logs aren't giving me any information on what the problem is. Where can I look to find out why the upgrade installation wizard isn't happy with the .update package I'm trying to install?

  • Try to rename the package from .update to .zip and open the package to see if the items and files are present in it – Hishaam Namooya Oct 14 '16 at 19:02
  • The contents of the .update are 4 more .updates. Sitecore 8.2 rev. 160729 (update package).zip contains Sitecore 8.2 rev. 160729.update. Sitecore 8.2 rev. 160729.update contains Sitecore 8.1 rev. 151003.update, Sitecore 8.1 rev. 151207, Sitecore 8.1 rev. 160302.update, Sitecore 8.1 rev. 160519.update Those smaller .update files contain package.zips with items inside. – Chris Sulham Oct 14 '16 at 19:04
  • I didn't quite get your comment – Hishaam Namooya Oct 14 '16 at 19:07
  • Heh I'm saying the .update package for 8.2, when renamed to .zip, contains 4 more .update files. Those files contain package.zips with items. – Chris Sulham Oct 14 '16 at 19:12
  • If you extract the main .update package and try to install the .update in the main one, does it work? – Hishaam Namooya Oct 14 '16 at 19:20
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Normally, the .update package can be converted to a zip file. You just need to rename the .update to .zip.

Once this is done, open the package and see if the items and dlls are present in the sub folders. If you have more .update package inside the package, you can try to unzip the main .update package and the install the sub .update package individually.

If you have errors while installing one of the .update package, it means that this .update package may contain corrupt items.

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