Rootfs build issue

I have updated to Ubuntu 9.10, after which i am not able to build rootfs
Below error is reported, looks like the python is updated and its not
taking md5. Is there any patch for
"oe/tmp/staging/i686-linux/usr/bin/" file ?

DeprecationWarning: the md5 module is deprecated; use hashlib instead
  import md5
Traceback (most recent call last):
  File "/home/ubuntu/oe/tmp/staging/i686-linux/usr/bin/ipkg-make-index",
line 114, in <module>
    pkg = ipkg.Package(filename)
  File "/home/ubuntu/oe/tmp/staging/i686-linux/usr/bin/", line
162, in __init__
    tarf ="control.tar.gz", "r", tarStream)
line 1649, in open
    raise ReadError("file could not be opened successfully")
tarfile.ReadError: file could not be opened successfully