Thomas, Thanks for the quick reply. Here is a little more background on our install. We have a test server set up with a mirror of production and that is where I am doing the upgrade testing, so I can go back to the current 6.3 at any time and redo the process till I get it right. We have a main wiki with 7 or 8 subwikis. Despite many different attempts, I have never been able to get the Distribution Wizard to appear. So we have taken to just deploying the latest War file and then using the Extension Updater. I generally chose 'Check for updates on farm'. This then provides me with a list of extension that are out of date. I then go through and update every extension that is out of date. This had worked with every upgrade I have tried until 6.4.2. It worked with 6.4.1 in our test environment, but we didn't actually go to 6.4.1 in production because of some the issues present in 6.4.1. What is the best option here for the place we are at? Should I try to get the Distribution Wizard to appear so that it will handle the upgrade from 6.3 to 6.4.2? If so, are there any suggestions on how to do this? Or would it be better to try and clean things out first? Im not quite sure how to determine which installed extensions don't make sense. Also, when you say clean up, how should I do that? For most of the extensions I only have Uninstall and Downgrade options. (not sure why there are Downgrade options, as I have only seen in that when trying to go to 6.4.2). Thanks for the help! Charlie -----Original Message----- From: users [mailto:users-bounces@xwiki.org] On Behalf Of Thomas Mortagne Sent: Friday, March 6, 2015 3:18 AM To: XWiki Users Subject: Re: [xwiki-users] Cannot upgrade Enterprise UI Extension to 6.4.2 You have several very weird things in your setup: * first as you can see in the error it seems like you installed org.xwiki.platform:xwiki-platform-appwithinminutes-ui at farm level which is a really unusual thing to do for a XAR and especially for a XAR which is a standard XE dependency * this extension is 6.3 which mean you did not fully upgraded from 6.3 to 6.4.1 and you have some leftover for some reason * as far as I understand you are not using the Distribution Wizard (as otherwise you wouldn't have ended up with XWiki Enterprise - UI - Main Wiki All and at all or some standard extension installed at farm level), is there a specific reason for that ? I ideally I would suggest to cleanup a bit (look at installed extension and try to clean anything that don't make much sense like 6.3 standard extension leftover or standard extension installed at farm level instead of in the wiki they are used) and then use the Distribution Wizard to so a proper upgrade but I don't know your constraints. On Thu, Mar 5, 2015 at 10:28 PM, Charlie Mann <charlie.mann(a)aed.pro> wrote: All' 6.4.2. -- Thomas Mortagne _______________________________________________ users mailing list users(a)xwiki.org http://lists.xwiki.org/mailman/listinfo/users

You should probably try http://extensions.xwiki.org/xwiki/bin/view/Extension/Extension+Tweak with XE extensions (search for "enterprise" in Installed Extensions in administration and open details to find the id). On Mon, Mar 9, 2015 at 9:52 AM, Thomas Mortagne <thomas.mortagne(a)xwiki.com> wrote: -- Thomas Mortagne