This appears to be a duplicate of bug 185103. It's still present in 2.1.0, but has been fixed in 2.0.5 and will be fixed in 2.1.1.
As a workaround, delete the 'held' directory inside the .bzr/branch/lock directory (or maybe .bzr/repostiory/lock or .bzr/checkout/lock).
This appears to be a duplicate of bug 185103. It's still present in 2.1.0, but has been fixed in 2.0.5 and will be fixed in 2.1.1.
As a workaround, delete the 'held' directory inside the .bzr/branch/lock directory (or maybe .bzr/repostiory /lock or .bzr/checkout/ lock).