Further investigation suggests some problem occurred with the download of the deb. Removing the cached version and redownloading fixed the problem.
** Changed in: dpkg (Ubuntu) Status: New => Invalid -- package seamonkey-browser 1.1.17 nobinonly-0ubuntu1 [modified: usr/share/seamonkey/chrome/installed-chrome.txt] failed to install/upgrade: https://bugs.launchpad.net/bugs/577601 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs