Solution : https://service.sap.com/sap/support/notes/726251 (SAP Service marketplace login required)
Key words : 
terms cl_gui_ecatt_recorder solution import sap gui, windows 620 support package 45, symptom recording, lowspeedconnection-flag, downloaded
Related Notes : 
       
| 509992 | Composite SAP Note: eCATT recorder | 
| 96885 | Downloading front end patches |