Answer:
Exit REVIT and RFEM. Then, restart your PC to ensure that all the services have been restarted. Try to run the import/export again. If the problem persists, please reinstall RFEM.
Error During Import/Export Between REVIT and RFEM
During the import/export between REVIT and RFEM, an error appears. No RFEM model is open; what can I do?
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