How can I fix directory detection in GWT's nocache.js?

My GWT/forplay project has stopped working. The project/project.nocache.js file makes the browser request md5hash.cache.html, rather than project/md5hash.cache.html. (It tries to load from one d开发者_如何转开发irectory too high.) This results in a 404, of course. I have seen this across browsers, and even across servers.

Can anybody with nocache.js knowledge take a guess at why it now fails to point the browser to the right place for the cache.html file?

Thank you!