Hello XWiki experts, I've been getting into a crazy situation where I could not save a page anymore. The error reported was a hibernate error complaining about consistency violation wrt to a primary key on xwikilinks. Having looked into the DB, the indexes, tried to remove things, .... I just realized that the error was the parser. That page (a groovy page) was recorded in Syntax 1.0 and the parser caught a piece of string [A-Z], within a regexp, as a link. That'd be a broken link, but it turned out to create this constraint violation. For this case I just upgraded the syntax. Good to know in the future for us, and probably others since "quickly patching a syntax 1.0 page" is likely to be something several people still do although it's all deprecated. Paul