Confluence Pages don't render, cannot create/edit content

We are upgrading from Confluence 3.2 to Confluence 3.5 to Confluence 4.3. This instance has a number of plugins, some of which are no longer supported (this may or may not relate to the issues we are seeing). Any time we create a new page or edit an existing one Confluence throws an error when the page is saved. We also see this error in other places in Confluence.


javax.servlet.ServletException: Servlet execution threw an exception

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(

caused by: java.lang.NoClassDefFoundError: org/apache/xerces/dom/DocumentFragmentImpl

at org.apache.xerces.dom.CoreDocumentImpl.createDocumentFragment(Unknown Source)

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Tried and true - restarted confluence (not sure why I didn't think of that sooner). I'm not sure what happened but in all the poking around we must have jarred some plugin into behaving badly.

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