Compiling error in Unity 5 with .net 4.0 target framework?

[peterpants]

I upgraded to Unity 5 and installed Playmaker 1.7.8.

I'm getting about 35 namespace errors.
It doesn't give any compiler errors when I set the target framework to .net 3.5 but throws errors when I compile in .net 4.0..

The earlier versions would compile in .net 4.0. Not sure what's happening? Not even sure if this is the reason? I'm using FinalIK and it likes to compile in 4.0.

[jeanfabre]

Hi,

 Can you paste some of these namespace errors?

What target are you taking about?

Bye,

 Jean