When recording a dotnet protocol script you will get this error message:
Microsoft .NET Framework is not installed on this machine. Before recording a script, you must install Microsof .NET Framework version 1.1
This may occur if your application was developed in .Net 4.0, versions of Vugen prior to 11.5 can display this error.
You would have to update to Vugen 11.5 or LoadRunner 11.5. If after this you encounter a crash while recording, there is a reported defect for recording with dotnet protocol detailed here: http://support.microfocus.com/kb/kmdoc.php?id=KM00441300, it would require to install SP2 for 11.5.
To download 11.5 you would have to open a Service Request with Electronic Software Support, they will provide it for you.
You can download SP2 from here:
• LoadRunner Service Pack 11.52: http://support.microfocus.com/kb/kmdoc.php?id=KM00424389
• Vugen SA Service Pack 11.52: http://support.microfocus.com/kb/kmdoc.php?id=KM00424405