Application autostart does not work

Hi guys,
I am trying to make autostart of my app, but the app is launched by bash script that automatically launch the app again when crashed:
(it finds the latest application version and then launch...then it is waiting for crash , rerun and wait again) - when I placed this script in /etc/profile.d, my system got stuck on my application view without loading desktop (and other needed services).

#!/bin/bash
sleep 30
while true
do
str=`ls /home/lufa/Shared/QT/xxxx* | sort -n -t _ -k 2 | tail -n1`
if [ ! `pgrep $str` ] ; then
$str
fi
sleep 30
done

Thus, I  added autostart.sh.desktop file in ~/.config/autostart/  like this:
 

[Desktop Entry]
Type=Application
Name=Autostart
Exec="/home/lufa/Shared/autostart.sh"
Hidden=false
NoDisplay=false
X-GNOME-Autostart-enabled=true

Unfortunately my app was not automatically launched Any ideas?

I assume that the progblem is GUI app. I got from crontab  log -  "QXcbConnection: Could not connect to display" - despiting I put "sleep 30" in my bash screipt to wait for ready Desktop.