I attached a picture of what the plugin should show once you have it installed and configured.
Once you have that, you can add IR devices. You'll need the latest firmware for this (version 1.5.408).
Create an IR device by doing the following:
"Devices" tab -> "Add devices" subtab -> Click "Add" for "Add IR device"
Vera will then walk you through the steps, first selecting a blaster, then choose "Guided setup" and see if you find the device/manufacturer/setting that works.
Once you have the IR device added, in any scene, you can add commands to send via the "Advanced" tab when creating/editing the scene.
For example, to make a "TV off" scene:
"Automation" tab -> New Scene
Click "Advanced" tab
For each command you want to add:
In the "Pick a device" dropdown, choose the new IR device you added above, and click "Add"
Go to the device, and choose the command you want to send
Save the scene, wait for LUUP to restart/configure, and try to run the scene.
*Note: If you make more complex scenes like "Watch DVD" you may need delays (turn receiver on immediately, wait 3 seconds, change the input to DVD, etc). These delays are handled the same way in the "Advanced" tab as they are for all other scene items. If the drop down is set to "immediate" then Vera will send them as quickly as possible, one after the other. If you need a delay, you can create the delay, and assign commands to the different intervals by choosing a different delay from the dropdown before hitting "Add" for the device.