CONTENTdm plugin for Omeka

We are hoping to get the Cdm link plug-in to work in Omeka so we can import ContentDM collections directly into Omeka. We had it working briefly but it seems to have broken after a server update. Has anyone successfully gotten this plug-in to work? We would really appreciate any insight you have.

This indicates it might be the reason

Does it import via the background task feature?