bugs on aptdaemon when install/remove programs

[Fabio Bernardes]

UBUNTU 10.10 Maverick Meerkat

This problem is blocking any kind of install/remove operation using apt-get, software center or synaptic.

The message reported by software center is:

{
Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 768, in simulate
    return self._simulate_helper(trans, status_path)
  File "/usr/lib/python2.6/dist-packages/aptdaemon/worker.py", line 938, in _simulate_helper
    return depends, status, self._cache.required_download, \
  File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 218, in required_download
    pm.get_archives(fetcher, self._list, self._records)
SystemError: E:I wasn't able to locate file for the ttf-mscorefonts-installer package. This might mean you need to manually fix this package.
}

I've heard it may be a linecode error on the aptdaemon, but how can i solve this?
Thx