The issue can be found here: http://test.saugeenartists.ca/
It works with other themes: Yes
It works when I disable all other plugins: No
Meta Slider version: 2.1
Oxygen Theme version: 0.5
Seems to be an issue with the theme (and child theme) but when I insert the Meta Slider into the .php code of my index page it takes up twice the size and shows two versions of the images with a loading icon in the middle. The loading icon doesn't go away and the proper transitions only happen in the top image. When the image slider is inserted into a post or page using the shortcode it works perfectly fine.
I've tried deactivating all of my other plug-ins and the problem still exists. I tried inserting the shortcode php in the Twenty Twelve theme and it works perfectly.
I've tried the other Meta Slider themes (FlexSlider, NivoSlider, etc.) and it happens with all of them, though some of them won't show the double images but the navigation is completely above the slider. When it doesn't show the two images you can read the text under it but you can't highlight it or click on links.
I first contacted the plug-in author but they were unable to help as it seems there is something in the theme's code preventing the slider from working properly. Any help is appreciated!
Hopefully, this link to the plug-in support thread will help: http://wordpress.org/support/topic/double-images-when-inserted-via-php