[oe] I got a err : AttributeError: 'FetchData' object has no attribute 'method'

[Tongfeng.Yang]

Hello EveryOne: 
      when I build Openmoko ,I got the error below .First Time the error
occur when do_fetch ,then i add an empty do_fetch and run again ,but It
has error when do_unpack this time .So I think it's not deal with
downloader .  
     I read the source of bitbake : bb/fetch/__init__.py .the if-branch
which 'FetchData' run is all right ,when bitbake fetch other package .
    so I think the err must be in libgsmd_svn.bb .but there same to have
no error :
11 SRC_URI =
"svn://svn.openmoko.org/trunk/src/target;module=gsm;proto=http \
12            file://gsmd \
13            file://default"\
14            file://fix-mlbuf.patch;patch=1

help me .

Tongfeng.Yang 
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The Error : 

ERROR: Build of /work/oe/openembedded/packages/gsm/libgsmd_svn.bb
do_unpack failed
Traceback (most recent call last):
  File "/work/oe/bitbake/bin/bitbake", line 134, in ?
    main()
  File "/work/oe/bitbake/bin/bitbake", line 131, in main
    cooker.cook()
  File "lib/bb/cooker.py", line 565, in cook
  File "lib/bb/cooker.py", line 477, in buildTargets
  File "lib/bb/runqueue.py", line 427, in execute_runqueue
  File "lib/bb/runqueue.py", line 555, in execute_runqueue_internal
  File "lib/bb/cooker.py", line 132, in tryBuild
  File "lib/bb/cooker.py", line 105, in tryBuildPackage
  File "/work/oe/bitbake/lib/bb/build.py", line 292, in exec_task
    execute(None, task)
  File "/work/oe/bitbake/lib/bb/build.py", line 281, in execute
    exec_func(item, localdata)
  File "/work/oe/bitbake/lib/bb/build.py", line 98, in exec_func
    exec_func_python(func, d)
  File "/work/oe/bitbake/lib/bb/build.py", line 117, in exec_func_python
    utils.better_exec(comp,g,tmp, bb.data.getVar('FILE',d,1))
  File "/work/oe/bitbake/lib/bb/utils.py", line 144, in better_exec
    exec code in context
  File "do_unpack", line 4, in ?
  File "do_unpack", line 2, in do_unpack
  File "/work/oe/bitbake/lib/bb/build.py", line 98, in exec_func
    exec_func_python(func, d)
  File "/work/oe/bitbake/lib/bb/build.py", line 117, in exec_func_python
    utils.better_exec(comp,g,tmp, bb.data.getVar('FILE',d,1))
  File "/work/oe/bitbake/lib/bb/utils.py", line 144, in better_exec
    exec code in context
  File "base_do_unpack", line 25, in ?
  File "base_do_unpack", line 13, in base_do_unpack
  File "/work/oe/bitbake/lib/bb/fetch/__init__.py", line 219, in
localpath
    ud = init([url], d)
  File "/work/oe/bitbake/lib/bb/fetch/__init__.py", line 123, in init
    urldata[url].setup_localpath(d) 
  File "/work/oe/bitbake/lib/bb/fetch/__init__.py", line 280, in
setup_localpath
    self.localpath = self.method.localpath(self.url, self, d)
AttributeError: 'FetchData' object has no attribute 'method'

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