Where is com.vaadin.external.org.apache.commons ?

I am not finding this file com.vaadin.external.org.apache.commons.io.output.DeferredFileOutputStream when I deploy vaadin 6.4.5. I find only the fileupload directory but there is no io directory. The nightly build is not doing that ??

com.vaadin.external.org.apache.commons.fileupload.disk.DiskFileItem: can’t find referenced class com.vaadin.external.org.apache.commons.io.output.DeferredFileOutputStream

The Vaadin JAR for 6.4 only includes some parts of the Apache Commons libraries that are needed for the internal operations of Vaadin file uploads. Even these will be removed from Vaadin 6.5 as the upload mechanism has been refactored.

If you need Apache Commons in your code, you should add its JARs to your project.