hgview #88239 Error on ``hg qv -I qt README`` [rejected]

using mercurial == 1.6.4 (no prob with mercurial 2.0)

Traceback (most recent call last):
File "/usr/bin/hg", line 27, in <module>
mercurial.dispatch.run()
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 16, in run
sys.exit(dispatch(sys.argv[1:]))
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 34, in dispatch
return _runcatch(u, args)
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 54, in _runcatch
return _dispatch(ui, args)
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 494, in _dispatch
cmdpats, cmdoptions)
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 355, in runcommand
ret = _runcommand(ui, options, cmd, d)
File "/usr/lib/pymodules/python2.6/mercurial/extensions.py", line 174, in wrap
return wrapper(origfn, *args, **kwargs)
File "/usr/lib/pymodules/python2.6/hgext/color.py", line 211, in colorcmd
return orig(ui_, opts, cmd, cmdfunc)
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 545, in _runcommand
return checkargs()
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 499, in checkargs
return cmdfunc()
File "/usr/lib/pymodules/python2.6/mercurial/dispatch.py", line 492, in <lambda>
d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
File "/usr/lib/pymodules/python2.6/mercurial/util.py", line 420, in check
return func(*args, **kwargs)
File "/home/alain/src/hgview/hgext/hgview.py", line 64, in start_hgview
start(repo, options, pats, fnerror)
File "/home/alain/src/hgview/hgext/../hgviewlib/application.py", line 135, in start
app = Application(repo, opts, args)
File "/home/alain/src/hgview/hgext/../hgviewlib/qt4/application.py", line 48, in __init__
super(HgViewQtApplication, self).__init__(*args, **kwargs)
File "/home/alain/src/hgview/hgext/../hgviewlib/application.py", line 78, in __init__
self.choose_viewer()
File "/home/alain/src/hgview/hgext/../hgviewlib/application.py", line 83, in choose_viewer
filename = rootpath(self.repo, self.opts.rev, self.args[0])
File "/home/alain/src/hgview/hgext/../hgviewlib/util.py", line 86, in rootpath
filenames = list(ctx.walk(match(ctx, [path], {})))
File "/usr/lib/pymodules/python2.6/mercurial/context.py", line 188, in walk
fset = set(match.files())
AttributeError: 'NoneType' object has no attribute 'files'

priorityimportant
typebug
done in1.6.0
load0.000
load left0.000
closed by<not specified>