From your screenshot, it looks like it can't find the libhildonmime0 package. Perhaps you are missing a repository. That package should be on:

Name: Maemo Chinook
URL: http://repository.maemo.org/
Distribution: chinook
Components: free non-free

Check the catalogs your N8x0 has available (in Tools within Application Manager), and add the above if you don't see anything resembling that one. The URL might have been spelled incorrectly (was a bug in an older OS2008 revision I believe, particularly the N810; you should update to the latest firmware if you haven't already).