I'd suggest to remove that add-in right away, because that is for 2003.
After that, remove 2007 and reinstall it.

Patrick Schmid [OneNote MVP]
--------------
http://pschmid.net
***
Office 2007 RTM Issues: http://pschmid.net/blog/2006/11/13/80
***
Customize Office 2007: http://pschmid.net/office2007/customize
RibbonCustomizer Add-In: http://pschmid.net/office2007/ribboncustomizer
OneNote 2007: http://pschmid.net/office2007/onenote
***
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"Julian" <Julian@discussions.microsoft.com> wrote in message
news:F7FC9CD8-CD59-46AD-8085-94EB89FBFCEE@microsoft.com:

> Hi
> I have been using onenote 2007 printer function for a while. Suddenly the
> onenote printer is not found anymore for some reason.
> I did the following with no help
>
> -I reinstalled the "send to onenote" add-in for MS office
> -I ran MS office diagnostics tool
>
> Do you have other suggestions?
> i.e add the printer manually?