Broken/missing handler or Array

I'm currently evaluation the Conference module to use for a conference in 2011.

There's a problem with the 3 views for:

* abstract_accepted
* abstract_rejections
* abstract_submissions

All show an error message in the filters.

Broken/missing handler or Array

Clicking on this links shows:

Error: handler for node_data_field_abstract_status > field_abstract_status_value_many_to_one doesn't exist!

I tried adding a filter to look for something that resembles the abstract status so I could get the views to work, but there was nothing in the list.

Also noticed on all 3 views is that the "Node type" displayed "Unknown". I assumed this would have been set to "Conference contribution" by default.