Comment 19 for bug 825280

Same problem here. I've updated my system to 11.10 two days ago. Whenever I open an email or any folder in Thunderbird (v 7.0.1) the following message appears:

<<There was a problem opening the address book "Ubuntu One" - the message returned was: Cannot open book: Bad Request>>

I can work around this problem by deleting the address book "Ubuntu One" for one Thunderbird session. When I do this, I get the following message:

<<Sorry - this version of EDS Contacts Integration does not support deleting Evolution address books. Due to the way that Thunderbird tries to delete address books, all of your EDS address books will appear to be removed from the address book manager. Simply restart Thunderbird in order to have them return.>>

And indeed, as soon as I restart Thunderbird, the address book comes back and with it the problem described above.