From the Wall Street Journal's Environmental Capital blog:
Europe's biofuel industry has long complained about U.S. subsidies. Friday, it took its case to the European Union but the chances of winning a victory look slim. EU biodiesel producers have been simmering about the $1 per gallon tax credit American biodiesel producers get. EU producers say that distorts the market and, in the words of the biodiesel trade group, created a severe injury to the EU biodiesel industry.
The Guardian is a bit more optimistic regarding the European Biodiesel Board's case.