Problem with running ladybug in dynamo

[ae]

Hi, I am trying to run the sample rvt file together with some dynamo files from honeybee samples and nothing works. Can someone point me in the right direction? What should I do with the rooms?

If I use flatten then I get another error:
Stackvalue object has no attributes

[mostapha]

Room extractor has been proved to be tricky. You can bring the geometries to Dynamo by selecting Elements By Type.

In your second image it seems that List.Flatten node is disabled.