[ubuntu] Kernel image error causing FTP install failure topic

So I'm new to Ubuntu and trying to install vsftpd on my web server. However, whenever I use the

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sudo apt-get install vsftpd

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command, I get this error:

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E: The package linux-image-3.8.0-41-generic needs to be reinstalled, but I can't find an archive for it.

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Has anyone else seen this error before? How did you fix it? It comes up trying to install virtually anything right now, and is also preventing me from doing an upgrade. I've been able to find some other forums where people have a similar error, but none with a useable solution.