Tips on how you can avoid the looping installs and secure your Steam account more.

Well, i tried to run Borderlands2 and thought it wasn't a first time install i still got this error.

Solution from Ansatsunin :

To fix:

Go to your "<Steam>/steamapps/common/Borderlands 2" folder, and rename the file installscript.vdf to something like installscript.vdf.orig. This will prevent the game doing anything when trying to run through the installscript.

To see what it does, open the file in Wordpad. Works for all games with this issue. Be sure to let any newly installed game run through it once, though.

Though this is off-topic - it's still a good info on how to secure further your Steam Account ( Again by Ansatsunin ). Posted it here just because the reply is kind of deep down and not everyone sees it. It's based on a mistake i did, when i first posted the photo, leaving my steam login username uncovered.

Your username is never viewable by anyone other than you, and anyone who can see your main steam window. If your custom profile URL (for me that's http://steamcommunity.com/id/oni_shinobi/ ) is the same as the username (mine begins with the_... and then some other stuff) you log in to Steam with, that is a security risk, right there. Might as well hand out your password while you're at it, too. The actual username you use to log in to things with is half of what's needed to log in to stuff with. Always protect it and handle it with just as much care as your password for stuff. Not just on Steam, either.

You can change your custom URL if you edit your profile on Steam. I'd advise you to do so as soon as you read this, if it's the same as your Steam username.