Solution : https://service.sap.com/sap/support/notes/672901 (SAP Service marketplace login required)
Key words : 
support package levels 15-17 patches, successful database login, support package level 03, support package 18, support package 04, system displays, dialog box, error message, internet pricing, earlier version
Related Notes : 
       
| 486061 | How to get patches for CRM Internet Pricing Configurator |