I am having problems with the configurable products not showing the options on the frontend. If I use the default theme that came with magento (rwd), all the options are there and working great. But if I select my custom theme, the dropdown options shows nothing but the default "choose an option..."
I have tried most of the troubleshooting but still the problem persist.
Console errors.
By the way, my custom theme is based on rwd built-in theme in magento. I only modified most of the styles and copied some phtml from the base folder.
This problem took me a day to figure out what was wrong and now I finally have an answer to my own problem.
Great Tip: Always check for jquery conflicts for this type of issue. thanks to @Chiragit007 for the hint.