title: Error with homestead up
body: <p>I following the instructions to setup homestead and homstead up return:</p>
  
  <pre>
  ☁  ~  homestead up
  Bringing machine 'default' up with 'virtualbox' provider...
  ==> default: Importing base box 'laravel/homestead'...
  There was an error while executing `VBoxManage`, a CLI used by Vagrant
  for controlling VirtualBox. The command and stderr is shown below.
  
  Command: ["import", "/Users/cmarfil/.vagrant.d/boxes/laravel-VAGRANTSLASH-homestead/0.2.2/virtualbox/box.ovf", "--vsys", "0", "--vmname", "settler_default_1419000625797_92760_1424667778246_80033", "--vsys", "0", "--unit", "7", "--disk", "/Users/cmarfil/VirtualBox VMs/settler_default_1419000625797_92760_1424667778246_80033/box-disk1.vmdk"]
  
  Stderr: 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%
  Interpreting /Users/cmarfil/.vagrant.d/boxes/laravel-VAGRANTSLASH-homestead/0.2.2/virtualbox/box.ovf...
  OK.
  0%...
  Progress state: VBOX_E_FILE_ERROR
  VBoxManage: error: Appliance import failed
  VBoxManage: error: Could not create the imported medium '/Users/cmarfil/VirtualBox VMs/settler_default_1419000625797_92760_1424667778246_80033/box-disk1.vmdk'.
  VBoxManage: error: VMDK: Compressed image is corrupted '/Users/cmarfil/.vagrant.d/boxes/laravel-VAGRANTSLASH-homestead/0.2.2/virtualbox/box-disk1.vmdk' (VERR_ZIP_CORRUPTED)
  VBoxManage: error: Details: code VBOX_E_FILE_ERROR (0x80bb0004), component Appliance, interface IAppliance
  VBoxManage: error: Context: "int handleImportAppliance(HandlerArg*)" at line 779 of file VBoxManageAppliance.cpp</pre>
  
  <p>I tested the method without composer with git clone and same result.</p>
  
  <p>Any idea?</p>
  
  <p>Thanks!</p>