File System Explorer page in Web UI generates a 500 - Web Application Error when clicked

Hello,

We have developed a problem with the web UI on one of our Isilon 7.0.1.5 clusters.  When clicking on the File System Explorer link we get an error:

Saving the html we see this info (removed the html tags):

  File "/usr/local/share/webware/WebKit/Application.py", line 650, in runTransaction

    self.runTransactionViaServlet(servlet, trans)

  File "/usr/local/share/webware/WebKit/Application.py", line 738, in runTransactionViaServlet

    servlet.runTransaction(trans)

  File "/usr/local/share/webware/WebKit/Servlet.py", line 59, in runTransaction

    trans.awake()

  File "/usr/local/share/webware/WebKit/Transaction.py", line 137, in awake

    self._servlet.awake(self)

  File "webui/Filesystem.py", line 849, in awake

    self.sharepaths = [s.path for s in smb.shareEnum(False)]

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/__init__.py", line 690, in shareEnum

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/__init__.py", line 1213, in share_enum

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/__init__.py", line 1124, in share_get_info

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/__init__.py", line 895, in shareBinarySdToAclList

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/sd.py", line 191, in sdBinarySdToList

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/sd.py", line 226, in _sdBinarySdUnpackAcl

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/sd.py", line 435, in _sdAclBinaryToList

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/sd.py", line 536, in _sdAceBinaryToDict

  File "/usr/local/lib/python2.6/site-packages/isi/config/smb/sd.py", line 700, in _sdAceFlagBinaryToString

TypeError: Unknown Ace Flags

Time: Thu May 30 15:34:16 2013

File: webui/Filesystem.py

CWD:  /usr/local/www/webkit

Path: /usr/local/www/webkit,/usr/local/share/webware,/usr/local/lib/python2.6,/usr/local/lib/python2.6/plat-freebsd7,/usr/local/lib/python2.6/lib-tk,/usr/local/lib/python2.6/lib-old,/usr/local/lib/python2.6/lib-dynload,/usr/local/lib/python2.6/site-packages,/usr/local/www/webkit

Environment:

HOME:      /

OLDPWD:      /

PATH:      /sbin:/bin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin

PWD:      /usr/local/www/webkit

RC_PID:      1385

Will mention our second 7.0.1.5 cluster does not experience this problem.  Any ideas?  This is affecting our ability accessing the cluster filesystem with our application remotely.