“the stacks are on the right side”
This bit of your post is confusing as Stacks are shown in a library on the left – this has been the case since about 2010.
I suspect that either you don’t have the most recent version of the Stacks plugin, you don’t have the Stacks plugin, or perhaps we’re just talking about different things.
Just to make sure, download it from here: http://yourhead.com/stacks
Unzip it, and Double click to install.
The most recent version of Stacks is v3.1.0
Although we probably can’t answer questions about the DeFliGra stack in particular, our support folks would be happy to help you get Stacks installed and working. If you’d like to talk to them, please don’t hesitate: http://yourhead.com/support