Print to Go First Use: Anti-Virus is Your Enemy
All Print to Go users:
Have you tried to set up Print to Go, push print, get to the initial "log in" screen, put in your BlackBerry ID and then it just sits there or says "session expired"?
Go to your anti-virus/firewall program (I find AVG to be a big culprit here) and disable it for 10 minutes as you set up the initial login/PlayBook code settings. Then you should be able to set up Print to Go no problem.
I can't guarantee it's a universal solution, but it just worked on 2 different computers having the same problem.