This plugin creates a cached js file in wp-content/uploads/shadowbox-js
In this case your file is:
http://verysmartdesign.com/w/wp-content/uploads/shadowbox-js/ed1004eebc5bab68f0d54754e141ca1a.js?ver=3.0.3
However, this file is not readable by the webserver user. Check and modify the permissions on this file. Once it is readable by the web server shadowbox should start working.
I changed all file permissions in that folder to 777 and it is still not working??
You could always try just deleting the file. That should force it to not use a cached file. The development version of the plugin in the repo has an option to allow you to disable using the cached file. But the current version, you just need to delete the file.
If you go with the deleting the file route, if you ever change the configuration options of the plugin, you will need to delete all files in that directory again.
I have been trying for the past few hours to get this to work; I deleted that cached file, I uninstalled and reinstalled…
My site where I implement it is http://verysmartdesign.com/central/
I started using lightbox in the past few weeks since shadowbox wasnt working, and I read that this will replace all lightbox images, but anything I click just brings me to a blank page with just the image rather than the shadowbox popup.
If anyone else could be of assistance I would greatly appreciate it, I had this working on another site I built and I am confused why it is not working on this one…