Hi I've got a little problem with the installation of the game Portal. I already installed steam and it works. When I try to install Portal i choose 'Already installed (online)' then I click on 'next'. In the next step it says 'Please close Steam before continue.'. Steam is already closed so I click on 'next'. In the following step it says that I have to run Portal once before using the second part of the script and it asks if I want to start Portal now. If I click on 'yes' there appear a frame with 'Program error'.
It says that a fatal error appeared in 'steam.exe'.
What's the reason for this and how can I solve the problem?