1
my guess is some prob with your install of extender
use my folder https://drive.google.com/open?id=0B3EJsib7nOiIR1ZqeDN5Rm1RYzQ
it a replacement of some files on xcom folder not just the EXE, you don´t need to install it, and don´t need to replace your´s , just unpack it anywere and use OpenexcomEx_fix
tell me if it works!
This works great, and has a bunch of nifty extra features to boot! I do lament the loss of my backpack space, but sacrifices must be made...