title: Joomla 3.1 Upgrade, issue with extension manager
body: <p>Now before anyone says "No one can help you with that" please understand that the upgrade worked, this is just a weird bug.</p>
  
  <p>Ok so I upgraded Joomla from 2.5.14 successfully and everything works, nothing out of the ordinary. Every component/module/plugin seems to be working as it should.</p>
  
  <p>HOWEVER the extension manager has a strange behavior, it constantly says:</p>
  
  <p><code>-1 Copy file failed</code></p>
  
  <p>I would think file permission problems, but everything is writable. The wierdest thing is it actually installed perfectly, just get this error rather then it saying it worked. (Meaning that when I install the component, there is no error).</p>
  
  <p>This also only happens with components.</p>
  
  <p>Just strange, might be worthy of diving deeper into it in case others run into this with an upgrade. I do not know enough about how the extension manager works to try to identify the problem either, and the lack of a real (or accurate) error message makes it even harder. (the files did copy, so that error message seems out of place)</p>
  
  <p>I will try to look a little deeper in it and see if I cannot isolate it, For those who want to try to recreate it, you can do it by upgrading from 2.5.14 to 3.1.5 though the update manager. The main components I have are no number extension manager, akeeba and admin tools that I feel might have something to do with it.</p>