Problem
The documentation in IBPSA.Airflow uses Buildings.XY at some points, e.g.: in IBPSA.Airflow:
<a href=\"modelica://IBPSA.Fluid\">
Buildings.Fluid</a>.
or in IBPSA.Airflow.Multizone.UsersGuide:
The package Buildings.Airflow.Multizone contains models for multizone airflow and contaminant transport.
How to solve:
Search for all usage of Buildings. in IBPSA and check if the usage is indented or not. Maybe do the same for IDEAS, AixLib, and BuildingSystems as well.