Had FCG working, but then lost it

[PogoFan]

I am my own worst enemy....

I installed Streamline in a sandbox to get it ready to switch my site over to the new theme. I configured the most recent version of FCG and actually had it working properly.

Then I started playing with widgets and still had FCG working, even with Event Calendar activated and active in widgets. I continued setting up footer widgets, etc., and changed some settings in Streamline options and in Gallery options and.... managed to lose the FCG functioning. After I broke things, it would show me a black screen and the headlines would pop up. I kept trying to fix things, and managed to lose the headline popups, too. I disabled the Event Calendar widget (without deactivating the plugin), but that didn't restore things. And of course, in a panic, I kept switching other settings in Streamline options, all to no avail.

My current gallery settings are using Featured category, size 575 x 375, 50 pixel for title, display 3, all other default.

Can anyone take a look at the sandbox at http://aquaman.pogowasright.org and see if you can spot what I might have done wrong? I doublechecked that I have at least three posts in the Featured category that have articleimg field with images in http://aquaman.pogowasright.org/wp-content/uploads directory.

Thanks for any help.