I get this obscure message trying to upgrade timbre to cljs 1.7.228 (from 0.0.2727) and I have no idea what's changed.
java.lang.AbstractMethodError: Method cljsbuild/compiler/SourcePaths._find_sources(Ljava/lang/ObjectLjava/lang/Object; is abstract, compiling/private/var/folders/k6/glc05svd5d194k8kgqfwkrph0000gn/T/form-init382463497803898384.clj:1:124)
Code that triggers it is here:
I've eliminated my cljc as being the cause by bumping the clojurescript version on the original code and seeing the same error.
clojure 1.7, clojurescript 1.7.228
You also need to upgrade the lein-cljsbuild version, not sure what is current but I believe at least 1.1.1 is required.
Ah, thanks. That's working now.