OK, thank you very, very much Boris ! it's clear now.
But now I'm anxious :-) because of the part This recording mode has less capabilities
The controler is a brand new one, I'm just installing it to put a license for a performance team.
So, I think I should solve the problem before puting the controler on full duty.
The OS is win server 2003 R2 enterprise X64 edition SP2
The version of LR is 11.52
The browser are IE8 and FIREFOX 19. And the problem occurs with all websites I want to script.
I'm runing vugen as administrator.
The LR protocol is Web HTTP.
McAfee and Windows Data Execution Prevention was disabled.
I think I will have a look to IE8 options...
Or if you have suggestions, let me know.
Best regards,
laurent