Installed and got crash

[deathcore]

I just bought AB and i've done step 1-3 and after step 3 i selected Language and then crashed

http://s15.postimg.org/fg68u6nvf/error2.png

then i restarted AB and got this:

http://s17.postimg.org/6g4coorpr/error.png

 

[Out]

install .NET 4.5.1 framework

 

[deathcore]

Ty now Ab lounched perfectly

 

[adiziz]

where can i install the framework?