A few weeks ago, Josh Mandel identified problems with the sample CDA Stylesheet that is released with C-CDA Release 1.1 and several other editions of the CDA Standard and various implementation guides. There are some 30 variants of the stylesheet in various HL7 standards and guides. A patched version of the file has been created and is now available from HL7's GForge site here.
Both the TSC and the HL7 Board are still discussing how to address this from an organizational perspective, and the Structured Documents Workgroup is currently considering how to address these sorts of tools that are released in the future. Thanks very much to Rick Geimer of Lantana Group for his extensive work on the patched stylesheet (and to his children for putting up with this over the weekend).