OK There are 2 TP versions(1 is stable, other is unstable), I'll tell you about both the versions.
TP 0.9.8 - Latest stable release, got less features then TP 1.0.5 but got very very few bugs
This TP requires many theme modifications, if you choose this, You would first be needing to remove your theme, switch to core theme and then install TP, then install the Crip's converted Theme.
TP 1.0.5 - Latest unstable(beta) release, got more features than TP 0.9.8 but also got bugs.
This TP requires only the forum button to be added to the theme, if you want this, you can switch to core theme(No need to uninstall the theme), then install TP 1.0.5 and add a forum button to your Goldnight theme and switch back to the theme.
But make sure before you do anything you do 3 things