I also experienced this same problem. While installing AutoMeta 0.9 may do the trick. AutoMeta 0.8 will still work, or at least it has for me. Here’s what I did:
1. Deactivate AutoMeta 0.8.
2. Write and publish the first post of the blog.
3. Activate AutoMeta 0.8 again.
After the first post was created without AutoMeta’s interference, all subsequent posts did not result in any errors once AutoMeta was back in action.
