Solution : https://service.sap.com/sap/support/notes/798263 (SAP Service marketplace login required)
Key words : 
attached source code corrections, terms marketing planner, symptom campaign types, attached corrections, campaign types, properly downloaded, anunicode system, customizingdownload reason, unicode system, special handling
Related Notes : 
       
| 902083 | Unicode Collection Note for CRM 4.0 | 
| 871457 | Unicode handling in download of Additional Date Ranges | 
| 852432 | Unicode changes to CUST_PCPD_WRT D/L object | 
| 834750 | Unicode changes to CUSTGRP_WRITE D/L object | 
| 799328 | Unicode handling in download of Product groups |