Hi Guys!

So I placed the install into my SS2 folder located in SteamApps. The SS2.exe is located there as well, however when I try to run the update and reach the "Choose installation folder" even though the path shows the location where the exe is located, I cannot click the "next" button to proceed with the update.

Any help is welcome,

Thanks to all!

The thing is that Steam is likely to overwrite any changes SS2Tool makes to the game. And it cannot even be turned off.
Therefore modding a game under steamapps is impractical and not allowed by SS2Tool. Like Voodo said, just move the game folder somewhere else. The path shouldn't be too long, something like c:/games/SS2 is perfect.