can't install mysql cookbook

t.log

hanuman:chef-repo dwhsix$ knife cookbook delete mysql
ERROR: Cannot find a cookbook named mysql to delete
hanuman:chef-repo dwhsix$ ls cookbooks/mysql
ls: cookbooks/mysql: No such file or directory
hanuman:chef-repo dwhsix$ knife cookbook site install mysql
Installing mysql to /Users/dwhsix/clients/zmx/workspace/zmx2/chef-repo/cookbooks
Checking out the master branch.
Pristine copy branch (chef-vendor-mysql) exists, switching to it.
Downloading mysql from the cookbooks site at version 1.2.6 to /Users/dwhsix/clients/zmx/workspace/zmx2/chef-repo/cookbooks/mysql.tar.gz
Cookbook saved: /Users/dwhsix/clients/zmx/workspace/zmx2/chef-repo/cookbooks/mysql.tar.gz
Removing pre-existing version.
Uncompressing mysql version 1.2.6.
removing downloaded tarball
No changes made to mysql
Checking out the master branch.
ERROR: IOError: Cannot open or read /Users/dwhsix/clients/zmx/workspace/zmx2/chef-repo/cookbooks/mysql/metadata.rb!