can't get protocols.clj to compile

I’m using the beta 5 version of Prog Clj.

I’ve been able to get files to compile–for example:

user=> (load-file "src/examples/primes.clj") #'examples.primes/primes

But when I try to load protocols.clj, I get the following:

user=> (load-file "src/examples/protocols.clj") CompilerException java.lang.RuntimeException: Unable to resolve symbol: make-reader in this context, compiling:(/Users/gw/tech/clojurestuff/cljprojects/ProgCloj2/src/examples/protocols.clj:11)

Where does @make-reader@ come from? Thanks.