title: Why is my workspace window empty (while I can see my variables with "whos")?
body: <p>So I am having this problem for a few days now. 
  I am using Matlab R2017b on Mac, and it worked perfectly up untill a few days ago when I ran a code (not for the first time) and my variables did not appear in the workspace window. However I can see them all when using the command "whos". </p>
  
  <p>I was running very simple scripts to create graphs and perform stats.</p>
  
  <p>I have no idea if it is related, I wouldn't think so but just in case, it happened when I ran the code and also got that warning:</p>
  
  <blockquote>
    <p>"Cleaning up unclosed ZipFile for archive
    /Users/.../CD_EBCC_data.xlsx"</p>
  </blockquote>
  
  <p>I've rebooted the computer but no changes. </p>
  
  <p>Thanks in advance for your help! Let me know if any extra info could be of help.</p>
  
  <p>EDIT: </p>
  
  <p>Here a screenshot:
  <a href="https://i.stack.imgur.com/xaSYo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xaSYo.png" alt="enter image description here"></a>
  on the left are all my variables as visualized with "whos", on the right you can see the empty workspace.
  If I type "a=1" in the command window, there is no variable <em>a</em> created in the workspace but if I type whos I can see it is actually there. It is just that I cannot see it in the workspace window. If I type the name of an existing variable, it is displayed normaly in the command window. Hope that is clearer.</p>