XnView Software

I'e encountered this with GIMP 2.10 on a linux mint system

I still haven't found a solution yet.
After all I upgraded my sysetm so I can use a normal GIMP PPA.
Still there is a glitch with xnview: GIMP crashes when using clipboard functions when xnview is open at the same time.

Hello,

I wonder how it is possible to open an image from within xnview like "open with GIMP 2.10".
My GIMP is a flatpak installation on Linux Mint 18.3
Xnview wants a programme to be entered in the settings but how would I enter stuff like this?:

/usr/bin/flatpak run --branch=stable --arch=x86_64 ...

Hello,

XnViewMP
Version 0.82 x32 (Sep 12 2016)
Libformat version 6.91

Using XnView on Linux Mint:
RELEASE=17.1
CODENAME=rebecca
EDITION="MATE 32-bit"
DESCRIPTION="Linux Mint 17.1 Rebecca"
DESKTOP=MATE
TOOLKIT=GTK

Problem: it seems to crash whenever it finds files taht it doesn't like.
Terminal ...