First of all, yep! People are able to use 3ds Max 2010 and the G3D plugins for it, there is no need for 3ds Max 6 anymore, it can just be archived as a historical thing.
As for your errors, are you running 3ds Max 2010 as Administrator? To make sure you are, right click 3ds Max 2010, then click "Run as Administrator". Usually these errors are an indication that the program doesn't have Administrator privileges to access the Program Files (x86) directory.
The answer to the first question is that I was using 3ds Max 6 at the time I made the tutorial. At that time, there wasn't any 2010 SDK and it was only when the 2010 SDK was leaked that I ended up updating the tutorial, but didn't update the screenshots.
And as for the second question, SDSME didn't exist at the time the tutorial was made. But I'm pretty sure SDSME can still be used to replace the model of a map.
Yeah, I'll fix those up. And yeah, Imageshack cleared out their server right when they changed from being a website in which didn't require creating an account to requiring users to register with an account.
Yeah, I assume it may be a problem with your add-ons. 'Cause to me... the images are all normal and appear properly. Try right clicking any of the broken images and view them, see if it appears on postimage or some other website. If it appears on some other website apart from "postimage", then it's possible that you might have some malicious add-on being used on your web browser.
Are you sure they're still dead? I can see the images fine on the thread. The images are supposed to be one screenshot of the 3ds Max, and the other images are icons of the buttons. I used postimage for hosting the images.