sources issues?

[isaac408]

not sure apperently im having allot of issues in the sources.list file... really green to linux, but i can usualy figure some stuff out when i have an example .... this is the error im getting File "/usr/sbin/update-apt-xapian-index", line 699, in <module>
    res = updateIndex(dbpath, addons, progress)
  File "/usr/sbin/update-apt-xapian-index", line 340, in updateIndex
    cache = apt.Cache(memonly=True,progress=aptprogress)
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 86, in __init__
    self.open(progress)
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 123, in open
    self._cache = apt_pkg.Cache(progress)
SystemError: E:Malformed line 48 in source list /etc/apt/sources.list (dist parse), E:Malformed line 1 in source list /etc/apt/sources.list.d/ubuntu-tweak-testing-ppa-main.list (dist parse), E:The list of sources could not be read.
root@razor-laptop:/home/razor# synaptic
Traceback (most recent call last):
  File "/usr/sbin/update-apt-xapian-index", line 699, in <module>
    res = updateIndex(dbpath, addons, progress)
  File "/usr/sbin/update-apt-xapian-index", line 340, in updateIndex
    cache = apt.Cache(memonly=True,progress=aptprogress)
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 86, in __init__
    self.open(progress)
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 123, in open
    self._cache = apt_pkg.Cache(progress)
SystemError: E:Malformed line 48 in source list /etc/apt/sources.list (dist parse), E:Malformed line 1 in source list /etc/apt/sources.list.d/ubuntu-tweak-testing-ppa-main.list (dist parse), E:The list of sources could not be read.