Question about xml_serialization_test

This is the same error that I got today with rev 5597 and mentioned to Rick. I was also running with the all.sh script. (Ruby 1.8.4 on Mac/Intel)

FWIW, here is what desc is where the code breaks:

Executing break point at ./../lib/../../activesupport/lib/active_support/dependencies.rb:400 in `to_constant_name' irb(Dependencies):001:0> desc => #<Class:Post>