I installed the software the other day, and I am unable to open or save homes. I've tried both the installer and the web start versions, I've tried various folders, I have write access everywhere on the computer, I tried running as an administrator, I tried downloading a file to open from the gallery, and nothing works.

The error I get when opening simply gives the file name and says "Can't Open Home".

The error I get when saving is as follows:
Can't Save home in
"C:\Program Files\Sweet Home 3D\sh3d\1.sh3d"
RecorderException: Can't save home C:\Program Files\Sweet Home 3D\sh3d\1.sh3d
java.io.IOException: Access is Denied

As I said, I've tried running as an admin, and I definitely have write access. I've tried both the installed and web start versions. I know it can't be a Java issue, as the online version lets me export as a sh3d file, and also lets me import one. Yet every downloaded version I've tried cannot access files at all.

I'm currently running Windows 7 Professional 64-bit, and in case I forgot to mention it, the UAC is disabled. Any help would be greatly appreciated.