Can't run from REPL or lein using instructions in README.md

[eddingtonross]

I may be missing something obvious: I'm just following the instructions in README.md blindly. I'm using Clojure 1.4.0, Leiningen 2.0.0, Java 1.7.0_09

If I run command:

(use 'clj-stacktrace.repl)

in a lein repl I get

IllegalStateException pst already refers to: #'clojure.repl/pst in namespace: user  
clojure.lang.Namespace.warnOrFailOnReplace (Namespace.java:88)

If I follow the instructions for installing in Leiningen 2.x (just adding the init file) I get:

java.lang.RuntimeException: Unable to resolve symbol: clj-stacktrace in this con
text, compiling:(C:\Users\edward\.lein\init.clj:0)
    at clojure.lang.Compiler.analyze(Compiler.java:6281)
    at clojure.lang.Compiler.analyze(Compiler.java:6223)
    at clojure.lang.Compiler$VectorExpr.parse(Compiler.java:2954)
    at clojure.lang.Compiler.analyze(Compiler.java:6264)
    at clojure.lang.Compiler.analyze(Compiler.java:6223)
    at clojure.lang.Compiler$VectorExpr.parse(Compiler.java:2954)
    at clojure.lang.Compiler.analyze(Compiler.java:6264)
    at clojure.lang.Compiler.analyze(Compiler.java:6223)
    at clojure.lang.Compiler$MapExpr.parse(Compiler.java:2827)
    at clojure.lang.Compiler.analyze(Compiler.java:6270)
    at clojure.lang.Compiler.analyze(Compiler.java:6223)
    at clojure.lang.Compiler$MapExpr.parse(Compiler.java:2827)
    at clojure.lang.Compiler.analyze(Compiler.java:6270)
    at clojure.lang.Compiler.analyze(Compiler.java:6223)
    at clojure.lang.Compiler$BodyExpr$Parser.parse(Compiler.java:5618)
    at clojure.lang.Compiler$FnMethod.parse(Compiler.java:5054)
    at clojure.lang.Compiler$FnExpr.parse(Compiler.java:3674)
    at clojure.lang.Compiler.analyzeSeq(Compiler.java:6453)
    at clojure.lang.Compiler.analyze(Compiler.java:6262)
    at clojure.lang.Compiler.eval(Compiler.java:6508)
    at clojure.lang.Compiler.load(Compiler.java:6952)
    at clojure.lang.Compiler.loadFile(Compiler.java:6912)
    at clojure.lang.RT$3.invoke(RT.java:307)
    at leiningen.core.user$fn__301.invoke(user.clj:22)
    at clojure.lang.AFn.applyToHelper(AFn.java:159)
    at clojure.lang.AFn.applyTo(AFn.java:151)
    at clojure.core$apply.invoke(core.clj:601)
    at clojure.core$memoize$fn__4921.doInvoke(core.clj:5620)
    at clojure.lang.RestFn.invoke(RestFn.java:397)
    at leiningen.core.main$_main$fn__1665.invoke(main.clj:222)
    at leiningen.core.main$_main.doInvoke(main.clj:221)
    at clojure.lang.RestFn.invoke(RestFn.java:408)
    at clojure.lang.Var.invoke(Var.java:415)
    at clojure.lang.AFn.applyToHelper(AFn.java:161)
    at clojure.lang.Var.applyTo(Var.java:532)
    at clojure.core$apply.invoke(core.clj:601)
    at clojure.main$main_opt.invoke(main.clj:324)
    at clojure.main$main.doInvoke(main.clj:427)
    at clojure.lang.RestFn.invoke(RestFn.java:436)
    at clojure.lang.Var.invoke(Var.java:423)
    at clojure.lang.AFn.applyToHelper(AFn.java:167)
    at clojure.lang.Var.applyTo(Var.java:532)
    at clojure.main.main(main.java:37)
Caused by: java.lang.RuntimeException: Unable to resolve symbol: clj-stacktrace
in this context
    at clojure.lang.Util.runtimeException(Util.java:170)
    at clojure.lang.Compiler.resolveIn(Compiler.java:6766)
    at clojure.lang.Compiler.resolve(Compiler.java:6710)
    at clojure.lang.Compiler.analyzeSymbol(Compiler.java:6671)
    at clojure.lang.Compiler.analyze(Compiler.java:6244)
    ... 42 more