Update release instructions or fix update-version script?

The update-versions script doesn't handle modules without a /project/parent/version element (the build-tools module doesn't have one).

karel@tomato:~/work/whirr$ ruby build-tools/update-versions 12345
Updating to version 12345 ...
build-tools/update-versions:61:in `process_module': undefined method `inner_html=' for nil:NilClass (NoMethodError)
from build-tools/update-versions:54:in `edit_pom'
from build-tools/update-versions:60:in `process_module'
from build-tools/update-versions:73
from build-tools/update-versions:73:in `each'
from build-tools/update-versions:73
from build-tools/update-versions:54:in `edit_pom'
from build-tools/update-versions:67