User-Agent:       Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/59.0.3071.104 Safari/537.36
Build Identifier: 

Starting terminal emulator from a running X session fails with message "You
need to run terminator in an X environment. Make sure $DISPLAY is properly
set".

Reproducible: Always

Steps to Reproduce:
1. Start a working terminal (xterm, xfce4-terminal)
2. Run terminator binary
3. Get error message
Actual Results:  
You need to run terminator in an X environment. Make sure $DISPLAY is properly
set

Expected Results:  
Application starts

Other X applications work from this same session (for example Xterm,
xfce4-terminal which were used to get the error message, emacs-x11, chromium).

>From one of the other terminals: "echo $DISPLAY" shows :0