Solution : https://service.sap.com/sap/support/notes/1502999 (SAP Service marketplace login required)
Key words : 
sap netweaver implementation guide -> application server -> web dynpro abap -> set-, choose transaction spro display img, sap reference implementation guide, \users\<userid>\appdata\roaming\sap, settings\<userid>\application\sap, web dynpro abapofficecontrol, interface method if_ios_project~set_whitelist, web dynpro officecontrol, install sapgui application, sap cryptographic library
Related Notes : 
       
| 1544293 | PPM 5.0: Export/import does not work | 
| 800240 | |
| 397175 |