Weird, I have no idea why those were renamed like this... going to be fixed in next update.Go to the following path: \ressources\img\aunt if you're playing the offline version and rename the following files:
auntexterior.jpg to exterior.jpg
auntkitchen.jpg to kitchen.jpg
auntliving.jpg to living.jpg
auntpool.jpg to pool.jpg
This is the easier fix but not sustainable in the long run since the asset names will get changed with the next update. Alternately, you can modify the HTML file by opening it through a good text editor (I use notepad++ but notepad will do in a pinch), search through the file with the following string: '/ressources/img/aunt/' (without the quotes) and change the jpg names to the ones in your aunt folder. Basically all the .jpg will get aunt before its name (eg. exterior.jpg will become auntexterior.jpg)
I'll attach my HTML file too some time soon with these changes (I'm still doing some minor tweaks of my own).
Edit: found why, those were renamed for the wiki, I probably thought I was doing it in the wiki folder while I was editing the game folder. Sorry for that guys entirely my fault.