Stuck when burning an ISO

[PERCE-NEIGE]

Works perfectly with other ISO, and bug with this one, it stucks the burning process, and give no way to exit preserving the other burned ISO.

. /tmp/multisystem/multisystem-vte
ubuntu@ubuntu:/usr/local/share/multisystem$ . /temp/multisystem/multisystem-vte
fileselect:/media/ubuntu/PROGRAMMES/ISO/FD12CD.iso
function name:addvte
option1:addvte
option2:/media/ubuntu/PROGRAMMES/ISO/FD12CD.iso
options3:
ok plpbt.bin
(...)
fichier:/media/ubuntu/PROGRAMMES/ISO/FD12CD.iso
iso:418Mio
libre:186210Mio
(...)
mount: /dev/loop1 is write-protected, mounting read-only
XKBLAYOUT:
XKBVARAINT:
XKBMODEL:
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
^C
ubuntu@unbuntu:/usr/local/share/multisystem$ ^C
ubuntu@ubuntu: /usr/local/share/multisystem$ ^M
: commande introuvable
ubuntu@ubuntu:/usr/local/share/multisystem$

When relaunching Multisystem, everything is broken, and it shows:
Erreur: impossible de supprimer: ARCHIVER
BASE
BOOT
DEVEL
EDIT
GAMES
ISOLINUX
NET
PKGINFO
SOUND
UTIL

[PERCE-NEIGE (perce-neige)]

I have no idea how to remove this bug report.
Multisystem launched a window with an output, but this windows was hidden by other ones.

It's the reason of the output "Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged." This kind of output happens when it launches a GUI application from the terminal.

So, this bug report should be removed.

[PERCE-NEIGE (perce-neige)]

I marked it as "invalid".