title: strange problem with referenced log4net assembly
body: <p>I'm not sure if this problem is connected specifically with log4net or this is some problem with VS.</p>
  
  <p>Everytime I'm trying, I have the same result. But let's start from the beginning.</p>
  
  <p>I'm creating a simply console application (.net 4) and using nuget to install the log4net library.
  Now, when I want to add some code from it, intellisense works ok:
  <img src="https://i.stack.imgur.com/thnAW.png" alt="enter image description here"></p>
  
  <p>But when I try to compile it, I have an error
  <img src="https://i.stack.imgur.com/gzFlq.png" alt="enter image description here"></p>
  
  <p>This is the only one assembly I found to this moment, I have this problem with. I have absolutly no idea what (and why) is going on. I have checked with two other solutions and problem is the same. I have not checked manually downloaded version yet.</p>