'ring-devel' depends on 'ns-tracker', which uses tools.namespace 0.1.3: https://github.com/weavejester/ns-tracker/blob/master/project.clj
Dependency resolution will only allow one version of the library, so your project gets tools.namespace 0.2.0, not 0.1.3. The two releases are not compatible, which is documented in the README. This will have to be fixed in ring-devel and/or ns-tracker. -S -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en