XnView Software

VIEW / Show files in subfolder. Note the little icon next to it as it is also on the default toolbar
That will show every file in that folder and all the folders beneath
It is quite handy

You may have several vertical tabs (Folders, Favorites etc) Click one of the other ones then go back to folders and it will be there. It is a graphics issue I believe
If the entire side panel has gone then go to view / layout and pick your layout again

The performance issue is definitely caused by the large amount of Categories (2900+ in my case). It impacts all the regular usage of the tool, for example if I just doubleclick in Total Commander on a regular, unkeyworded photo, the loading time of the photo is very slow and I have to wait several ...

Tools / Settings or just hit F12 and follow the previous post. Please let us know how you make out

Try going into SETTINGS / VIEW and make sure that the reset is checked on the view tab

Does it always open correctly in Windows explorer? If so you set it up correctly now in XcView try opening it with F3 rather than double clicking

0.96.1 x64 on Windows 10 x64
Thumbnails formerly showed the checkerboard background to indicate transparent areas
It has disappeared in this version

Find a .KRA file. Right click it, choose "open with" and choose XnView and make sure "always open with" is checked

I doubt if it is really stupid at all. It SOUNDS like a permissions issue and I have had similar on Windows with files and folders
But I have no idea of how to change things on Apple products so hopefully someone can add some direction for you to follow

From Explorer, try right clicking the SVG file and choosing "open with"
Then find XnView and make sure 'Always open with' is checked. That will fix the registry issue

Post your OS as I am on windows and probably can't help other than to suggest to look at my graphic again and see if adding that extension to the INcludes solves it for you

I can see the thumbnail and here is where to look. Note: I have shut off all excludes but if you want to keep them just edit the exclude entry by removing SVG

That would interest me also

Then get sage thumbs. It adds to the right click menu and can give you a quick view of a graphic from there
I have to ask; are you seeing the thumbnails in XnView? that should be doing exactly what you wish

In Windows go to default programs and select XnView as your photo viewer. If there are some that still do not call XnView, right click them in windows explorer and choose XnView to open that file type making sure you tick the box to ALWAYS open with Xnview You can even CONTROL + left click from with...