Thank you for your reply!
I have now downloaded the latest version, and I tried to run the newest example-file, which I found in this forum. I do nothing with the setup, and my rhino-file is in meters. Still no vectors are generated. The U-folder looks the same for 0 iterations and 600 iterations - and the screen looks like the screen shot above.
May it be that some input get lost in the download? I have tried to search through the document for it, but do not know what it could be.
By the way I tried the indoor simulation as well - when I had the older version installed, and that is working fine, so I dont think this has anything to do with OpenFoam.
The example file I used is attached here.
Thank you for helping me out with this!
01_0_outdoor_airflow_ny.gh (445.6 KB)