Hi, I'm trying to upgrade an existing XWiki Instance (V3.5.1). It's running with a MSSQL database. I already tried the following (see referenced links below) and upgrades to different higher versions of XWiki e.g. 4.x, 5.4.x. However I always get this exception http://pastebin.com/yeaFQAtt. http://xwiki.475771.n2.nabble.com/Another-migration-problem-3-5-to-4-1-3-td7... http://lists.xwiki.org/pipermail/users/2012-August/023537.html http://xwiki.475771.n2.nabble.com/Failed-migration-from-3-0-to-4-3-1-td75833... Does somebody have any hints how to solve this? Many thanks in advance! -- View this message in context: http://xwiki.475771.n2.nabble.com/Can-t-Upgrade-from-XWiki-3-5-1-tp7600118.h... Sent from the XWiki- Users mailing list archive at Nabble.com.