Solution : https://service.sap.com/sap/support/notes/517232 (SAP Service marketplace login required)
Key words : 
0b front-end patch 15, bw front-end patch, 0b front-end installation, front-end patch, solution implement bw 2, error message appears, 'run-time error '457' -, terms business explorer, run-time error 457, describes installation
Related Notes : 
       
| 534629 | BW 2.0B/2.1C front-end patch 18 | 
| 452467 | BW 2.0B/2.1C front-end patch 15 |