problem for 0.6c

[Xiaofeng Ling]

I tried to clone a local tree with hg 0.6c
but it failed, when roll back to 0.6b, it's ok.
Is there any change for the repository between 0.6b and 0.6c?

error messsage:
hg clone vbdtree v3
Traceback (most recent call last):
   File "/usr/bin/hg", line 13, in ?
     commands.run()
   File "/usr/lib/python2.3/site-packages/mercurial/commands.py", line 
1461, in run
     sys.exit(dispatch(sys.argv[1:]))
   File "/usr/lib/python2.3/site-packages/mercurial/commands.py", line 
1571, in dispatch
     return d()
   File "/usr/lib/python2.3/site-packages/mercurial/commands.py", line 
1558, in <lambda>
     d = lambda: func(u, *args, **cmdoptions)
   File "/usr/lib/python2.3/site-packages/mercurial/commands.py", line 
531, in clone
     update(ui, repo)
   File "/usr/lib/python2.3/site-packages/mercurial/commands.py", line 
1257, in update
     return repo.update(node, allow=merge, force=clean)
   File "/usr/lib/python2.3/site-packages/mercurial/hg.py", line 1734, 
in update
     t = self.file(f).read(get[f])
   File "/usr/lib/python2.3/site-packages/mercurial/hg.py", line 37, in read
     t = self.revision(node)
   File "/usr/lib/python2.3/site-packages/mercurial/revlog.py", line 
244, in revision
     rev = self.rev(node)
   File "/usr/lib/python2.3/site-packages/mercurial/revlog.py", line 
160, in rev
     def rev(self, node): return self.nodemap[node]
KeyError: 'O\xf1\t\x95x\x19N\xcfG\xdd\xa6\xaa\xf7Z\xbf6\x98O\x96\xd9'