Download problem with external package

[Jens KLEIN]

version 1.0.15.1
With external_links = True and follow_external_index_pages = False i get:

2010-08-08 11:22:04,795 DEBUG Processing package EasyGuider
http://wiki.woodpecker.org.cn/moin/EasyGuider
http://wiki.woodpecker.org.cn/moin/EasyGuider/?action=AttachFile&do=get&target=EasyGuider-0.1.tar.gz
Traceback (most recent call last):
  File "./bin/pypimirror", line 14, in <module>
    z3c.pypimirror.mirror.run()
  File "/opt/pypimirror/eggs/z3c.pypimirror-1.0.15.1-py2.6.egg/z3c/pypimirror/mirror.py", line 761, in run
    config["base_url"])
  File "/opt/pypimirror/eggs/z3c.pypimirror-1.0.15.1-py2.6.egg/z3c/pypimirror/mirror.py", line 502, in mirror
    mirror_package.write(filename, data, md5_hash)
  File "/opt/pypimirror/eggs/z3c.pypimirror-1.0.15.1-py2.6.egg/z3c/pypimirror/mirror.py", line 559, in write
    file.write(data)
  File "/opt/pypimirror/eggs/z3c.pypimirror-1.0.15.1-py2.6.egg/z3c/pypimirror/mirror.py", line 631, in write
    open(self.path, "wb").write(data)
IOError: [Errno 21] Is a directory: '/data/mirror/files/EasyGuider'
z7egg:/opt/pypimirror# Write failed: Broken pipe

I try to fix this later.