Can't Preview or View Custom Panel Layout

I did the following:

• Created folder /sites/all/themes/MYTHEME/panels/layouts/MY_LAYOUT/
• Copied over the Grid 2 panel theme from /sites/all/themes/omega/omega/panels/layouts/grid-2 into MY_LAYOUT
• Renamed all files in MY_LAYOUT to match them MY_LAYOUT name pattern (used _ instead of - for .inc file)
• Added plugins[panels][layouts] = panels/layouts to MYTHEME.info
• Added a custom page, selected the MY_LAYOUT layout, populated content I wanted

At this point I was feeling pretty good, all that was left was to save and preview. When I save and preview nothing shows up. When I view the page on my site nothing shows up. When I go into the source code I can see that the content is there but commented out with an HTML comment tag. I can't figure out why this is happening. Any suggestions?