title: Column will not sort in google spreadsheets
body: <p>I've been searching everywhere for this answer. </p>
  
  <p>Here's my sheet: 
  <a href="https://docs.google.com/spreadsheet/ccc?key=0AsdHK_HDz--odFE4cHFSeVNkYlhCRGI5OWJKdFEta3c#gid=0" rel="nofollow">https://docs.google.com/spreadsheet/ccc?key=0AsdHK_HDz--odFE4cHFSeVNkYlhCRGI5OWJKdFEta3c#gid=0</a></p>
  
  <p>Here's my form: 
  <a href="https://docs.google.com/forms/d/12OBYAlNHXCDaObACY2zD58suDqEnu3XS7YYVO3Vz044/viewform" rel="nofollow">https://docs.google.com/forms/d/12OBYAlNHXCDaObACY2zD58suDqEnu3XS7YYVO3Vz044/viewform</a></p>
  
  <p>I have a Google Spreadsheet that is being fed from a Google Form. The column I want to sort by is a "TimeStamp." That specific column is not being fed by the form, it is being fed from a custom function that watches column "N" and when a change is made to a row in column "N" column "L" is Timestamped. </p>
  
  <p>To make my data usable, I need to sort by column "L" which is the "Date" that the person was last online. However, it is not allowing me to sort. Normally, I will right click on the column label "N" and do a sort, but it does not appear in the context menu. If I check "Data" at the stop, "Sort" is grayed out. </p>
  
  <p>It seems that every column after "L" is not sortable either. Which is odd because "A-N" IS sortable (even though they're being fed by a form.</p>
  
  <p>I've been wracking my brain trying to figure this out. Is it because of the function? I don't think so because then why would subsequent columns to "L" not be able to sort either?</p>
  
  <p>Could use a little help!</p>