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Are you running steam as admin? What error messages are you getting?

Remember to run the 1.60 then 1.62 patches though after reinstalling because this updates A2/PMC/BAF and these updated files are needed else you won't be able to play on DayZ servers (you'll get errors about your pbos not have the right key).

What W0lle meant to say was that they're the same, you would just save a few $ by buying the Combined Operations package but they're exactly the same content :)

Try gamebooster. If you're desperate for some more FPS it can help.

If you have an anti virus/firewall installed disable it, run steam as administrator http://img717.imageshack.us/img717/5892/steamadmin2.jpg then verify the cache integrity for A2/OA

Hmm I just installed the Sprocket downloads of BAF/PMC over the top of my existing 1.61 RC2 install and it all went fine, just installed all games over the top: A2, OA, PMC, BAF then 1.60 then 1.62 and all patches completed fine.

It's possible this isn't necessarily strictly DayZ related so I'll move it to troubleshooting :)

You need to run Steam as administrator, have you tried that? You'll find that answer in lots of threads on here :)

1. Actually it's covered in lots and lots and lots of threads, guess your search terms weren't finding it? Yes they are. 2. Yes. 3. No. :)

Steam supporters were wrong. http://www.battleye.com/support.html

I doubt it.

Serial number is the CD Key. That error if steam is because it's not run as administrator, twice you've failed to mention which version of the game you have?

Six Updater is not a beta patch.

Well I'd suggest you explain the comment to me else I will have to judge it as trolling this thread? And flamebaiting the thread starter?

MPTable.shadow and PSSpecularAlpha error? Run Steam as admin, don't use beta patches or six updater until the basic installation is working.

http://www.arma2.com/index.php?Itemid=20&option=com_rokdownloads&view=folder〈=en http://downloads.rkslstudios.info/BIS/ARMA2OACORFT_Update_160.zip http://ftp.tier1ops.eu/files/ARMA2OACORFT_Update_160.zip http://mirror.dyneslott.com/arma2oa/ARMA2OACORFT_Update_160.zip http://mirror.unitedoperations.net/ARMA2OACORFT_Update_160.zip http://tier1ops.eu/files/arma2/ARMA2OACORFT_Update_160.zip http://www.kellys-heroes.eu/files/Arma2/patches/ARMA2OACORFT_Update_160.zip 1.60 links, all good. Do not use a beta/RC until 1. you've got 1.60 running and working good and 2. you've backed up your working 1.60 installation so you can quickly and easily undo the beta/RC

That's how I did it as well, except just moved it to a different hard drive :)

I would hazard a guess that the proliferation of Arma2 content being stolen and used in other mods for other games, with a complete lack of respect for us and the complete ignorance to our polite requests for their removal has put a damper on things, GTA being one of the prime candidates of that, if people want to see MLODs return I can only suggest they educate anyone they happen to come across about respecting the rights of those who create the content (that includes the community mods as well because they're being ripped for other games sadly).

I was gutted that Stalker 2 was cancelled, at least Metro Last Light seems to be taking up the mantle a little with (hopefully) more outdoor open areas. ;)

I'd like to see one of these types of games with aliens, war of the worlds or falling skies type :)

Paranoia? Was meant to be a joke but still ;) I read that they changed a lot of how it played out based on the success of DayZ, or is that also paranoia? ;)

Presumably you should have received your CD key in an email from Amazon, we have nothing to do with them or their distribution system so I can only suggest you contact them directly.

Just to add you can get by using Arma2free as you will find out on the DayZ forums, this saves you money right now but won't look so good texture wise, but it'll get you playing now for no extra money.

And don't have an antivirus active when installing/updating something like Steam or a game install as the latest versions of them tend to block key registry entries and file installations.