Solution : https://service.sap.com/sap/support/notes/103931 (SAP Service marketplace login required)
Key words :
~ftp/general/frontend/patches/rel40b/windows/win32/gnsmx_z, additional key words, checking logon, sap system, system register, program error, session manager, maximum number, system registers, exenote 96885 describes
Related Notes :
| 123889 | SM: window too small when you start SM the 1st time |
| 96885 | Downloading front end patches |