I am having similar issue as mentioned in the following post.
However, the example projects are corrupt and will not extract when I download them.
Also, here is the exact error I get when I try and open the layer, so not sure this is same issue as the other user.
The type initializer for ‘ehQ=.y0o=’ threw an exception.
Like the other user mentioned, the file loads in v9. I am using 10 latest stable.