How many movies have Eric Colvin and Walter P. Martishius collaborated on?

They have worked on 6 movies together! Their first movie together was Barbie: Fairytopia (2005) while their highest rated movie together was Barbie and the Three Musketeers (2009). They have not worked together since Barbie and the Three Musketeers (2009). They are most known for their family films together.