My executable gives Gtk-WARNING in Linux

[BranFlayk]

I've just done my first functional LiveCode program, and made an executable of it.
It generates a random password. The length of the password can be entered into Entry field boxes, or increased/decreased using Little Arrow controls.

When running from Linux command line, it gives the message "Gtk-WARNING **: GtkSpinButton: setting an adjustment with non-zero page size is deprecated"
this doesn't seem to stop the program from working.

Is this going to be down to a setting for building the application, or just a Linux issue?

Thanks in advance

[FourthWorld]

Linux is a vast and very diverse collection of operating systems. Which one are you using, and which version?

[BranFlayk]

I'm using Linux Mint 17.2 (32 bit)