Solution : https://service.sap.com/sap/support/notes/369228 (SAP Service marketplace login required)
Key words : 
error number 42999 additional key words print filewordprinting structure, vba program settings/sapkw/oeprint            create, print file creation error, print file typically terminates, macro error error, call program wdftrace, processor utilization 100%termination, hkey_current_user/software/vb, symptom word crashes, localize incorrect infoobjects
Related Notes : 
       
| 368239 | Knowledge Warehouse 5: Support Package 4 | 
| 312270 | Collective note: Printing with Knowledge Warehouse |