When installing DS 2018 on Windows 7 64bit I get: "Error 1317. An error occured while attempting to create the folder c:\\Programdata\\Application Data\\Dassault Systemes". Application Data is a junction point which re-directs files to Programdata, but although Dassault Systemes and all its subfolders & files do install correctly in C:\\Programdata the Error is still generated and the install has to be aborted. Changing file permissions and owners, and pasting the folders manually did not work. I have since installed two other programs into this folder without problem. It is only Draftsight that will not install. Does anyone have any suggestions please?