SubversionException: ("Can't get entries of non-directory", 160016)

When attempting to branch from a private repository, I get the following error:

Wed 2008-11-05 13:07:33 -0500
0.019 bzr arguments: [u'branch', u'file:///home/codyc/svn/app/legacy/trunk/']
0.019 looking for plugins in /home/codyc/.bazaar/plugins
0.052 bzr-svn: using Subversion 1.4.6 ()
0.060 looking for plugins in /usr/lib/python2.5/site-packages/bzrlib/plugins
0.076 encoding stdout as sys.stdout encoding 'UTF-8'
0.105 opening SVN RA connection to 'file:///home/codyc/svn/app/legacy/trunk'
0.459 creating branch <bzrlib.branch.BzrBranchFormat6 object at 0xf1e0d0> in file:///home/codyc/bzr/app/trunk/.bzr/
4.317 Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 893, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 839, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 539, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 980, in run
    force_new_repo=standalone)
  File "/home/codyc/.bazaar/plugins/svn/remote.py", line 64, in sprout
    return super(SvnRemoteAccess, self).sprout(*args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/bzrdir.py", line 1124, in sprout
    result, revision_id=_mod_revision.NULL_REVISION)
  File "/home/codyc/.bazaar/plugins/svn/branch.py", line 495, in sprout
    self.copy_content_into(result, revision_id=revision_id)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 138, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/branch.py", line 748, in copy_content_into
    self.tags.merge_to(destination.tags)
  File "/usr/lib/python2.5/site-packages/bzrlib/tag.py", line 211, in merge_to
    source_dict = self.get_tag_dict()
  File "/home/codyc/.bazaar/plugins/svn/tags.py", line 102, in get_tag_dict
    mapping=self.branch.mapping)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 138, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/home/codyc/.bazaar/plugins/svn/repository.py", line 904, in find_tags
    layout=layout, mapping=mapping, from_revnum=0, to_revnum=revnum)
  File "/usr/lib/python2.5/site-packages/bzrlib/decorators.py", line 138, in read_locked
    result = unbound(self, *args, **kwargs)
  File "/home/codyc/.bazaar/plugins/svn/repository.py", line 873, in find_tags_between
    tags[p] = self.generate_revision_id(tr, tp, mapping)
  File "/home/codyc/.bazaar/plugins/svn/repository.py", line 631, in generate_revision_id
    return self.get_revmap().get_revision_id(revnum, path, mapping, revprops, changed_fileprops)
  File "/home/codyc/.bazaar/plugins/svn/revids.py", line 142, in get_revision_id
    revid = self.actual.get_revision_id(revnum, path, mapping, changed_fileprops, revprops)
  File "/home/codyc/.bazaar/plugins/svn/revids.py", line 37, in get_revision_id
    (bzr_revno, revid) = mapping.get_revision_id(path, revprops, fileprops)
  File "/home/codyc/.bazaar/plugins/svn/mapping.py", line 561, in get_revision_id
    text = fileprops.get(SVN_PROP_BZR_REVISION_ID+str(self.scheme), None)
  File "/home/codyc/.bazaar/plugins/svn/logwalker.py", line 68, in get
    self._ensure_init()
  File "/home/codyc/.bazaar/plugins/svn/logwalker.py", line 38, in _ensure_init
    self.dict = self.create_fn(*self.args)
  File "/home/codyc/.bazaar/plugins/svn/branchprops.py", line 66, in _real_get_changed_properties
    current = self.get_properties(path, revnum)
  File "/home/codyc/.bazaar/plugins/svn/branchprops.py", line 42, in get_properties
    revnum)
  File "/home/codyc/.bazaar/plugins/svn/transport.py", line 357, in get_dir
    return conn.get_dir(path, revnum, kind)
SubversionException: ("Can't get entries of non-directory", 160016)

4.318 return code 4

After a bit more digging with -Dtransport, I found that the culprit is a *file* that has been placed in */tags/.

It would be nice if there were a more useful error message here with a workaround to ignore tags/branches (if one exists)?