I install the gallery content & k2 and upload images to a folder.
Call the plugin inside k2 item, correctly, because the main image is shown.
But thumbnails are not displayed.
In firebug, I get:
"Uncaught TypeError: Failed to execute 'stroke' on 'CanvasRenderingContext2D': No function was found that matched the signature provided. " in galleria.azur.min.js

and 404 not found the images in /images/cache folder.
I've even changed permissions to the folder, with no success