Elevator instance problem
There's this text file located in the
Steam/common/portal 2/bin
And there should be a text file for gameCONFIG.txt
Just edit it to your d drive and there you're done.
D or d doesn't matter.
I'm not really sure what I'm supposed to be editing to 'd'. This is a picture of the gameconfig (i haven't changed anything)
http://i.imgur.com/skHPl.png
Do other instances work?
GameConfig.txt is the same that the settings in hammer show.
Since your settings in hammer are the same as iWork's settings (and mine) that shouldn't be the problem.
What version of windows are you running by the way?
COULD it be possible that windows needs permissions to run stuff in that folder and hammer doesn't have access?
If you're running windows vista or 7, try to run hammer as admin and try again.
That's all I can do at the moment, I really need to get some sleep now... 
Nope
Since your settings in hammer are the same as iWork's settings (and mine) that shouldn't be the problem.
What version of windows are you running by the way?
COULD it be possible that windows needs permissions to run stuff in that folder and hammer doesn't have access?
If you're running windows vista or 7, try to run hammer as admin and try again.
That's all I can do at the moment, I really need to get some sleep now...
I'm running windows 7. I retried running steam as admin (not sure how/if I can do it for hammer specifically. But it didn't help.
Steamsteamappscommonportal 2binSDKLauncher.exe as admin? then run that program?
tried that too, still no good. Is there an easier way of completely removing steam and all it's programs than manually going in and deleting all the files in regedit and program files?
Just go to steam, uninstall all your games and then go to control panel and unistall steam itself? 
Is it any instance or just elevator? If only elevator what would happen if we uploaded the instance here?
So I guess it's all of 'em