Compiler optimization not working?

[mhuebert]

I'm using Leiningen 2.5.1 on OSX.

If I run lein new cljs-start test, I have to kill the process manually because it never exits (but it seems to create the project successfully.)

Then if I run cd test; lein cljsbuild once, the resulting JS file is 1.5mb, despite optimizations being set to :advanced. I tried changing optimizations to :simple, and then it doesn't build anything at all (hangs after "Compiling ClojureScript.")

Any ideas of what might be wrong?