Solution : https://service.sap.com/sap/support/notes/819087 (SAP Service marketplace login required)
Key words : 
iview content administration/portal content iview, select <sid>/server<#>/services/log configurator, select <sid>/server<#>/services/logviewer, sapbwnews bw sp11 netweaver'04 stack 11, iview user administration/roles, publish bex web applications, bex web application designer, /sap/ip/bi/webapplications, open/authorizations context menu, unknown error scenario occurred
Related Notes : 
       
| 763338 | SAPBWNews BW Support Package 11 NW'04 stack 11 RIN | 
| 723262 | SAPBWNews BW 3.1 SP Content 20 | 
| 723257 | SAPBWNews BW 3.0B Support Package 26 |