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I've migrated my Eclipse GAE project to use the Maven GAE plugin. I've now got it to the point that the devserver runs correctly (ie. mvn appengine:devserver).
However, when I attempt to try mvn appengine:backends_configure, I get the following exception: https://gist.github.com/sanity/5182601
Any ideas?
Try it after putting your backends.yaml in src/main/webapp/WEB-INF.