If you are using Ant in AndroMDA 3.1 and add all the jar files within your classpath (including the freemarker-template and freemarker.jar) you won't be able to run your model compiler. It will always exit with some wyrd freemarker.core errors!
Just remove the freemarker-template and freemarker lib to make the model compiler works again. It seems that AndroMDA 3.1 final will use Freemarker as a default template engine although all the cartridges use Velocity.
Maybe we need to add template type (Velocity, Freemarker) in each cartridge descriptors?
Eclipse 3.1, AndroMDA 3.1 final