If you own the PC version of Mass Effect and downloaded the game via Valve's Steam service you might have encountered some problems installing the new Pinnacle Station paid DLC content that BioWare released earlier this week. Reports from BioWare's message board states that Steam owners get a "Mass Effect CD key not found" error when trying to install Pinnacle Station.

However it appears the bug is with the DLC file and not with Steam. In a response to the issues, BioWare's Jack Lamden states on the message board, "The PRC installer that works with the Steam version of the game should replace what's currently on the EA store tomorrow sometime. You would just need to redownload the PRC and attempt to install again." That post was made on Tuesday night so its possible that the new version that works should be available to download from the EA Store now.