Without being able to view the environment the only thing I can think of is you might not have the PHP Internationalisation extension installed. If you don't have that then install it and re-run the task. In 1.1 I have removed this requirement and added a fallback.
I'm working on 1.1 and would like to get some thoughts from a few people on the subject of SEO.
On the sites I have seen using this so far, most of the content aside from the image is imo "thin". Comments such as "great photo", emoji etc.
Currently, I'm planning to add structured markup similar to the Gallery application as that is essentially what it is with each competition being a separate gallery. I would like to here people's thoughts on this though to see what people think should be no-indexed, no-followed etc if anything?