Solution : https://service.sap.com/sap/support/notes/707586 (SAP Service marketplace login required)
Key words : 
gv_last_process_type  instance attribute  protected   crmt_process_type gv_process_type      instance attribute  protected   crmt_process_type gv_last_status        instance attribute  protected   crm_j_status finally, set_ddlb_priority     instance method      protected set_ddlb_reason       instance method      protected set_ddlb_result       instance method      protected set_ddlb_status       instance method      protected, e-mail view set, method do_prepare_output, 'method do_prepare_output, e-mail solution, activate class cl_crm_ic_mailinteraction_impl, class cl_crm_ic_mailinteraction_impl, interaction history, interaction log
Related Notes : 
       
| 709921 | CRM 4.0 SP Stack 4/2004 (SAPKU40005): Release & Info. Note | 
| 705627 | CRM4.0 SP06 Termination of application during status change |