SAP Lumira gives blank screen when adding second live HANA dataset

Hi guys,

I created a Lumira document in Lumira 1.31.2 via a managed OLAP Connection to HANA. This works fine. Only, when I want to add a second data set (Data --> Add new dataset) the SAP HANA Data Acquisition Connector window seems not to load.

Any idea what this could be?

Thanks, Xavier