cookbook - "vagrant up --provision" fails ("vagrant up" is fine) -

i trying make incrementatal changes cookbook vagrant server. "vagrant destroy" followed "vagrant up" works "vagrant --provision" errors out below. files appear exist.

it seems weird when provisioning first time work , fail on reprovisioning. idea might doing wrong?

==> default: running provisioner: shell...     default: running: inline script ==> default: /usr/bin/chef-solo ==> default: running provisioner: shell...     default: running: inline script ==> default: running provisioner: chef_solo... ==> default: detected chef (latest) installed generating chef json , uploading... ==> default: running chef-solo... ==> default: [2015-04-01t05:42:20+00:00] info: forking chef instance converge... ==> default: [2015-04-01t05:42:20+00:00] info: *** chef 12.2.1 *** ==> default: [2015-04-01t05:42:20+00:00] info: chef-client pid: 3710 ==> default: [2015-04-01t05:42:21+00:00] info: setting run_list ["role[a]", "role[b]"] cli options ==> default: [2015-04-01t05:42:21+00:00] error: role (included 'top level') in runlist not exist. skipping expand. ==> default: [2015-04-01t05:42:21+00:00] error: role b (included 'top level') in runlist not exist. skipping expand. ==> default: ==> default: ==> default: ================================================================================ ==> default: error expanding run_list: ==> default: ================================================================================ ==> default: ==> default: missing role(s) in run list: ==> default: ---------------------------- ==> default: * included 'top level' ==> default: * b included 'top level' ==> default: ==> default: original run list ==> default: ----------------- ==> default: * role[a] ==> default: * role[b] ==> default: ==> default: ==> default: [2015-04-01t05:42:21+00:00] fatal: stacktrace dumped /var/chef/cache/chef-stacktrace.out ==> default: [2015-04-01t05:42:21+00:00] error: expanded run list includes nonexistent roles: a, b ==> default: [2015-04-01t05:42:22+00:00] fatal: chef::exceptions::childconvergeerror: chef run process exited unsuccessfully (exit code 1)