You would have to press back all the way to activity.php, otherwise it will error saying that you cant link to games directly & to use the activity page.
That is not so. After playing a game and reaching "back to game page"
link, if I click on the back button, it loads the game from my IE cache.
If I click on the link to go to the game main page and then click the back
button, then I get the error you mentioned.
I tried this on a number of sites that use this mod and I'm able to
reproduce the same result.
Also, I have problems accessing your web site. It always show
phpBB : Critical Error - User not found in IM preferences table
whenever I login.