grub-customizer fails to run

[Kelly Craft]

If I try to run grub-customizer I don't get any error or warning it just doesn't do anything.

If I try from term I get
$ grub-customizer

(grub-customizer:21545): Gtk-WARNING **: cannot open display:

I tried to troubleshoot this issue but didn't get anywhere.

If I try to use sudo I get
$ sudo grub-customizer

(grub-customizer:21482): Gtk-CRITICAL **: IA__gtk_image_menu_item_set_image: assertion 'GTK_IS_IMAGE_MENU_ITEM (image_menu_item)' failed

(grub-customizer:21482): Gtk-CRITICAL **: IA__gtk_container_add: assertion 'GTK_IS_CONTAINER (container)' failed

(grub-customizer:21482): Gtk-CRITICAL **: IA__gtk_accel_label_set_accel_widget: assertion 'GTK_IS_WIDGET (accel_widget)' failed

[Kelly Craft (scarab96)]

Running Ubuntu 15.10

[Daniel Richter (danielrichter2007)]

What about other gtk applications? Is there the same problem when you do `sudo gedit`?

[Kelly Craft (scarab96)]

I don't have problems with other apps. sudo gedit starts gedit with su permissions and no errors. I tried to troubleshoot the Gtk-WARNING **: cannot open display: but after extensive googling and multiple restarts I wasn't able to get anywhere.

[Kelly Craft (scarab96)]

This can be closed. I did a fresh install of 15.10 then reinstalled grub-customizer and it functions as expected. I'm not sure what was causing the problem previously.