Problems installing PHPDocumentor 1.2.3

Hi All, I've been trying to install PHPDocumentor ver 1.2.3 with some frustrations. For some reason (maybe a good one, I don't know), the PEAR PHPDocumentor package doesn't contain the docbuilder web interface. The PHPDocumentor download available from sourceforgs (http://sourceforge.net/project/showfiles.php?group_id=11194) does contain the docbuilder interface, but while the install notes that accompany this download suggest it's easy to then use PEAR to install the package locally, when I attempt to install it I get told that files in the docbuilder subdirectory don't match the md5 sums in the package's package.xml file. Does anyone have any advice on how I could go about successfully installing this package with the docbuilder interface, or via a manual install method? Many thanks, Murray