bzr commit error

[Robey Pointer]

Got this on a branch that I just upgraded from format 4 to format 6:

$ bzr commit -m "remove multiple NUL bytes if they exist"
bzr: ERROR: parent_id {TREE_ROOT-20050807194350-6e6d329ed3636ad5} not  
in inventory
   command: '/Users/robey/bin/bzr' 'commit' '-m' 'remove multiple NUL  
bytes if they exist'
   pwd: /Users/robey/code/mp3tag
   at /Users/robey/code/bzr/bzrlib/inventory.py line 861, in add()
   see ~/.bzr.log for debug information


Here's the relevant section of .bzr.log:

[12904] Thu 22:54:46.563 ERROR: parent_id  
{TREE_ROOT-20050807194350-6e6d329ed363
6ad5} not in inventory
   command: '/Users/robey/bin/bzr' 'commit' '-m' 'remove multiple NUL  
bytes if th
ey exist'
   pwd: /Users/robey/code/mp3tag
Traceback (most recent call last):
   File "/Users/robey/code/bzr/bzrlib/commands.py", line 514, in  
run_bzr_catch_er
rors
     return run_bzr(argv)
   File "/Users/robey/code/bzr/bzrlib/commands.py", line 499, in run_bzr
     ret = cmd_obj.run_argv(argv)
   File "/Users/robey/code/bzr/bzrlib/commands.py", line 214, in  
run_argv
     return self.run(**all_cmd_args)
   File "/Users/robey/code/bzr/bzrlib/builtins.py", line 1060, in run
     allow_pointless=unchanged, strict=strict)
   File "/Users/robey/code/bzr/bzrlib/branch.py", line 911, in commit
     Commit().commit(self, *args, **kw)
   File "/Users/robey/code/bzr/bzrlib/commit.py", line 253, in commit
     self._populate_new_inv()
   File "/Users/robey/code/bzr/bzrlib/commit.py", line 430, in  
_populate_new_inv
     self._select_entry(new_ie)
   File "/Users/robey/code/bzr/bzrlib/commit.py", line 436, in  
_select_entry
     self.new_inv.add(ie)
   File "/Users/robey/code/bzr/bzrlib/inventory.py", line 861, in add
     raise BzrError("parent_id {%s} not in inventory" % entry.parent_id)
BzrError: parent_id {TREE_ROOT-20050807194350-6e6d329ed3636ad5} not  
in inventory


Any help would be appreciated.  I'd like to be able to do this  
commit. ;)

robey