Honeybee Runtime error : Cannot import name permeter_core_by_offset


I’m working in Revit, and I’ve been using the same grasshopper definition for the past few months to conduct Annual Daylight Analysis (with Rhino.Inside).
However, I am now getting the following error : “Runtime error (ImportException) : Cannot import name perimeter_core_by_offset”.

Can anyone explain to me what this error means, and what I have to do to fix my script?
(Unfortunatelly I cannot attach my grasshopper definition or screenshots since I’m a new user)


I’ll try to update with the Versioner, then restart Rhino/Revit.