http://wiki.maemo.org/Extras-devel
"This is a repository for developers and regular contributors of specific software projects. If you want to play with extras-devel software you need to be prepared to feel some pain sooner or later. "

In retrospective manner i would like to ask you question. Were you prepared?

"Don't play with Extras-devel if you haven't backed up your data or aren't prepared to re-flash your device."

Flash your device and try to install healtcheck.