Solution : https://service.sap.com/sap/support/notes/356977 (SAP Service marketplace login required)
Key words : 
executing individual internet application components, newly created application packages, sap@web installation guide 6, sar application packages fails, internet transaction server, original packages delivered, easy web transactions, html pages generated, ess start page, incorrect html templates
Related Notes : 
       
| 339910 | Error executing Internet Service IT00 | 
| 334624 | Correction of the 46C_all.car application package | 
| 331407 | ITS patch installation of SAR packages (IAC packages) | 
| 330479 | Front office: Default call / selecting service is missing |