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I restarted my computer and a little red circle with a horizontal white line appeared. I clicked on it and it asked me to show updates, so I did that. Next, it says this:

An unresolvable problem occurred while initializing the package information.

Please report this bug against the 'update-manager' package and include the following error message:

'E:Type 'ain' is not known on line 3 in source list /etc/apt/sources.list.d/ehoover-compholio-precise.list, 
 E:The list of sources could not be read., 
 E:The package lists or status file could not be parsed or opened.'

Can anyone please help me?

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I think asking for workarounds for bugs is not on-topic in here. See and – moon.musick Aug 24 '13 at 10:30

If you want to report the bug, see this answer. On the other hand, asking for workarounds for bugs is not on-topic in here.

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