$ pfexec pkg refresh --full 
$ pfexec pkg update -v --be-name ${BENAME}
...
PHASE                                          ITEMS
Removing old actions                       1207/1207
Installing new actions                     1015/1015
Updating modified actions                  1273/6221Action upgrade failed for 'opt/DTT/Man/man1m/syscallbypid.d.1m' (pkg://openindiana.org/developer/dtrace/toolkit):
 TypeError: coercing to Unicode: need string or buffer, NoneType found
 The running system has not been modified. Modifications were only made to a clone of the running system.  This clone is mounted at /export/tmp/tmp5xPbPG should you wish to inspect it.
pkg: An unexpected error happened during update: coercing to Unicode: need string or buffer, NoneType found

Traceback (most recent call last):
  File "/usr/bin/pkg", line 6317, in handle_errors
    __ret = func(*args, **kwargs)
  File "/usr/bin/pkg", line 6303, in main_func
    pargs=pargs, **opts)
  File "/usr/bin/pkg", line 2138, in update
    reject_list=reject_pats, update_index=update_index)
  File "/usr/bin/pkg", line 1855, in __api_op
    ret_code = __api_execute_plan(_op, _api_inst)
  File "/usr/bin/pkg", line 1434, in __api_execute_plan
    api_inst.execute_plan()
  File "/usr/lib/python2.6/vendor-packages/pkg/client/api.py", line 2636, in execute_plan
    self._img.imageplan.execute()
  File "/usr/lib/python2.6/vendor-packages/pkg/client/imageplan.py", line 3895, in execute
    p.execute_update(src, dest)
  File "/usr/lib/python2.6/vendor-packages/pkg/client/pkgplan.py", line 532, in execute_update
    dest.install(self, src)
  File "/usr/lib/python2.6/vendor-packages/pkg/actions/file.py", line 191, in install
    stream = self.data()
  File "/usr/lib/python2.6/vendor-packages/pkg/client/transport/transport.py", line 2445, in opener
    f = open(cache_path, "rb")
TypeError: coercing to Unicode: need string or buffer, NoneType found

pkg: This is an internal error in pkg(5) version 8d10208.  Please log a
Service Request about this issue including the information above and this
message.