Where did you get 'Axes Manager' from ? Do you mean something else ? There is a 'UCS Manager' RBZ [DBUR_UcsManager.rbz] available from the SketchUcation Pluginstore http://sketchucation.com/pluginstore?pln=DBUR_UcsManager_v1_0_0 When properly install it has a subfolder named 'DBUR_UcsManager' in which is a Resources subfolder, which contains the PDF [UCS Manager.pdf]. The EWH includes a newer one by Didier named 'Axes Manager' ? With similar files/subfolders 'DBUR_AxesManager.rbz' etc. There is a Resources subfolder containing 'Axes Manager 2016.pdf' ? So How did you install it ? Using Windows > Preferences > Extensions > Install Extension... button ? I have just installed both from their RBZ and they both include the PDF in the ../Plugins/DBUR_XxxxManager/Resources subfolder...