I've installed the Palladian nodes and now when I start KNIME I get the following error in the console box:
ERROR APNodeFactory CODING PROBLEM XML node file does not conform with DTD: Element type "code" must be declared.
ERROR APNodeFactory CODING PROBLEM XML node file does not conform with DTD: Element type "code" must be declared.
ERROR APNodeFactory CODING PROBLEM XML node file does not conform with DTD: The content of element type "intro" must match "(p|h|br|b|i|u|tt|a|ul|ol|h3|h4|pre|sub|sup|table)".
I am on KNIME 2.5.1 and the error is gone. However, I believe the error was fixed along time ago. Try checking the community contributions NIGHTLY update site to find the newer release.
Yes, we fixed that issue indeed long ago. As Simon suggested, I would recommend to use the nightly builds, we update the stable Palladian branch very seldom, currently.