The solaris2mpm command fail with "AttributeError: 'NoneType' object has no attribute 'split' "

Issue

• The solaris2mpm command fail with following error

  # solaris2mpm --tempdir=/tmp 10_x86_Recommended.zip 
  Opening archive, this may take a while
  Error creating mpm for /datapool/sol/10_x86_Recommended.zip:
  Traceback (most recent call last):
    File "/opt/redhat/rhn/solaris/lib/python2.4/site-packages/rhnpush/solaris2mpm.py", line 198, in _run
      set_mpm = create_patch_set_mpm(archive_parser, archive)
    File "/opt/redhat/rhn/solaris/lib/python2.4/site-packages/rhnpush/solaris2mpm.py", line 298, in create_patch_set_mpm
      header['version'] = header['date'].split()[0].replace("-", "")
  AttributeError: 'NoneType' object has no attribute 'split'