So this is all very strange. I've tried for two days to get the software to work with no luck, but went ahead and tried again today - everything worked fine, I am now signed up with MyDlinkCloud, and am able to see my devices through the website. I'll have to check when I get home to see if SmartThings now sees the camera, but I'm assuming it will work now. I didn't change anything on my side, so I'm guessing whatever work D-Link has been doing is starting to filter out... Thanks!