Hello, same problem and same error here.
The short question is: how do we add images that are inside a "sub folder" of the "images" folder?
e.g.
If a image "classroom.png" is in the "/images/" folder, I can add it to the gallery like this:
```
define gallery.items = ['classroom']
```
If a image "classroom.png" is in the "/images/background/" folder, I CANNOT add it to the gallery like this:
```
define gallery.items = ['background/classroom']
```
The latter will result in error.
If I tried to init the images first
```
init -26:
image bg myClassroom:
"images/background/classroom.png"
```
And then
```
define gallery.items = ['myClassroom']
```
It will result in the same error as Noa Tugy's was facing.