Had been getting a lot of errors on bench migrate when compiling some .py files due to the fact that the MAC OS X host, when accessing the Virtual Machine linux vía Samba share, creates a meta file pre-pended by ._.
To stop this when using regardless of the editor you use, add this to your samba share configuration for all the folders you share from your virtual machine for development.
As root or sudo enabled user
sudo nano /etc/samba/smb.conf
Then in the share definition, add these lines:
veto files = /._*/.DS_Store/
delete veto files = yes
CTRL +X, Y, ENTER
Restart your samba service or reboot for changes to take effect.
sudo service smbd restart
Now I run bench migrate with confidence, regardless of which dev text editor I use.