Solution : https://service.sap.com/sap/support/notes/874976 (SAP Service marketplace login required)
Key words : 
double byte reason, solution crm isa 4, sap service marketplace, double byte characters, java patch procedure, blank characters, current patch, 'update' button, order template, header text
Related Notes : 
       
| 957949 | |
| 902083 | Unicode Collection Note for CRM 4.0 | 
| 857421 |