title: error in activating virtualenv
body: <p>I got this error when I tried to activate my virtual env
  i.e. source ~/edu-venv/bin/activate</p>
  
  <pre><code>-bash: /home/vagrant/edu-venv/bin/activate: No such file or directory
  </code></pre>
  
  <p>what should I do ?</p>
  
  <p>few hours back when I did vagrant halt I got this error </p>
  
  <pre><code>c:\Django\sites\vagrant&gt;vagrant halt
  [default] Attempting graceful shutdown of VM...
  There was an error while executing `VBoxManage`, a CLI used by Vagrant
  for controlling VirtualBox. The command and stderr is shown below.
  
  Command: ["showvminfo", "507b7f20-3a71-40bd-90e6-63ecde326ccd", "--machinereadable"]
  
  Stderr: VBoxManage.exe: error: Details: code E_ACCESSDENIED (0x80070005), callee IUnknown
  VBoxManage.exe: error: Context: "COMGETTER(RemoteUSBDevices)(ComSafeArrayAsOutParam(coll))" at line 1840 of fi
  le VBoxManageInfo.cpp
  </code></pre>
  
  <p>But then I immediately did vagrant up and it started and did vagrant halt it stopped gracefully then I shut down my pc. Now its not working  </p>