First make sure you have wine windows loader installed play on linux relies on it
open your terminal (Ctrl+Alt+T) type the following:
sudo add-apt-repository ppa:ubuntu-wine/ppa
sudo apt-get update
sudo apt-get install wine1.7 hit Y when prompt
sudo apt-get install winetricks
Install Synaptic Package Manager and once installed open in authorization mode. Once open click on custom filters, then broken, there should never be anything in that list… Click all packages in that list, set them for install and hit apply. Try again with your install of Play on Linux
if you cannot through software center terminal it again type:
sudo apt-get install synaptic
Hit Y when prompted.
then open it
if this doesn't help I'm sorry that question may be a little over my head… when a package is broken it is places in that list
PS the Linux systems are great once you learn to use them and learn to get around on them. I used windows for years and finally started to use Ubuntu and would never go back. You can get a virtual windows on virtual box and you can use wine for a lot of games.