Solution : https://service.sap.com/sap/support/notes/1091530 (SAP Service marketplace login required)
Key words :
patch level 28sap gui 7, patch level 5for, sap gui version 6, inserted html document, html document, source view, btf editor, design view, exception occurs, insert reason
Related Notes :
| 499555 | Exceptions in SAP GUI for Windows |
| 96885 | Downloading front end patches |