Bentley Connector - MDL Loader: Could not load application SpeckleConnectorOpenBuildings

I am having some trouble getting the Bently connector for OpenBuildings to work. I read previous threads about compatibility with different versions so I have installed OpenBuildingsDesigner Connect Edition Update 6 Version

When I open OpenBuildings I get the following error message in the text window …
“MDL Loader: Could not load application SpeckleConnectorOpenBuildings”

The Speckle2 tab appears in the ribbon but when I click the connector button, nothing happens.

I have checked the folder “C:\ProgramData\Bentley\OpenBuildings CONNECT Edition\Configuration\Organization” and the folder contains the Speckle2OpenBuildings.cfg file.

Any help anyone could offer would be greatly appreciated.

I can check with Arup team what the version support table should look like. @JdB @dtnaughton any thoughts?