I bought Dungeon Siege III via an electronic purchase from EBGames, which downloaded the file on Steam. I am running Windows Home Premium x64. DSIII worked fine until this afternoon, it did an update. After the update, I started received an update. The update apparently did something to several things: 1) When running the game, it says, "Game unavailable - try again later." As part of their troubleshooting, the site said to rename a .blob file. I did this and could no longer get into my Steam account - I did not remember my password. I went to the site to reset the password. It sent an email, containing a code and a link. The link went to a site which asked for the code and the answer to my security question. Despite entering both correctly, it indicated one or the other was wrong. I went to the Steam support site - it asked for my password. On another suggestion from the Steam support site, it said to try running DSIII from the command line - when I do, it indicates it now requires a 32-bit operating system.

 

So I'm kind of stuck - I restored the backup of the blob file and I can log in, but the game won't play, and I can't reset my password. I tried contacting Valve from several respects: By Phone: They indicate they do not give support via phone (for anything). By email: They indicate they are too busy to read my email or respond. By Fax: no response. I tried contacting Square Enix - same result. I contacted EB Games - they say they will respond in 3 days, but probably will indicate to contact Valve.

 

What do I do? I'm trying to redownload it, but suspect it might still not work, and may try to reinstall the patch again.

It sounds like Steam's DRM is being annoying once again. The best plan to to file a support ticket and wait for Valve to get back to you.