Nope, same error.  I also get this error if I omit the filemap.  I wonder if 
the problem has to do with the unusual structure of the repository:

PAT
|---subproj1
|   |---trunk
|   |---branches
|   |---tags
|
|---subproj2
|   |---trunk
|   |---branches
|   |---tags
|
...

My filemap is just mapping subprojX/trunk to subprojX and removing the branches 
(since they're trivial) and tags (since we don't need 'em).