I just installed WordPress.com-Stats in my own hosted WP installation.
I entered my API Key and it says the following:
Error from last API Key attempt:
The owner of that API Key (amenadiel) is not on the access list for this blog. When this blog was registered, xxxxx's API key was used. To add you to the access list, panchoavila must visit this blog's stats dashboard page and use the form at the bottom of that page.
Note: xxxx was one of the persons which helped me configure my original blog installation last year. I don't have contact with this person and no way to ask him to "add me" to any access list.
It there a way to reset blog's atribution, a way to demonstrate that I'm the owner and author of a blog?