Hey Wirefree,

There's a chance that one of the dependencies might have not downloaded right. Maybe conflict between repositories or something else, but here try this:

1. Completely uninstall all canola related things(in your case just uninstall canola)

2. Disable all Repositories (in app manager)

3. and try downloading it again, when it gives the error that the repo is disabled just click enable. try that.

If this doesn't work delete that repository and download canola from http://maemo.org/downloads/product/OS2008/canola2/

hope it helps