Error in the Metadata Manager

I'm attempting to deploy a new solution on AS 2005 developer edition.  Apparently, a previous, unrelated solution deployment has a problem, and this prevents me from deploying mine.  I've cleaned up the data directory, tried all sorts of options, but still I get the same thing.  Here's the error:

Error    1          XML parsing failed at line 2, column 0: A document must contain exactly one root element. . Errors in the metadata manager. An error occurred when instantiating a metadata object from the file, '\\ \E:\SQL 2005\MSSQL.2\OLAP\Data\Analysis Services Project1.0.db\cluster Population By Zip ~MC.0.cub\~CaseDetail ~MG.0.det.xml'. Errors in the metadata manager. The dimension with ID of 'Population By Zip', Name of 'Population By Zip' referenced by the 'cluster Population By Zip ~MC' cube, does not exist. Errors in the metadata manager. An error occurred when loading the cluster Population By Zip ~MC cube, from the file, '\\ \E:\SQL 2005\MSSQL.2\OLAP\Data\Analysis Services Project1.0.db\cluster Population By Zip ~MC.0.cub.xml'.

any ideas

thanks, Chris