> That suggests that your rebar is too old. What does "rebar > --version" say? That was it. rebar version: 2 date: 20120209_044624 vcs: git 1c1a32b fails rebar 2.1.0-pre R14B04 20130309_213845 git 2.1.0-pre-51-g8377a50-dirty works Thanks! -- David N. Welton http://www.dedasys.com/