grouper admin ui can throw an error when assigning folder permissions

Gary, do you mind taking a look at this?

Assign privileges to a group.

After clicking "assign privileges", click "Explore" on the left, and btw, I am acting as admin

Then the parent folder is shown, and click the "show entities with" button next to the folder permission drop down, you get an error

Error:

The error has been logged and the administrator notified.
If you continue to encounter errors, please contact technical support.

2011-09-16 14:16:02,736: [TP-Processor11] ERROR GrouperCapableAction.execute(298) - < mchyzer@idp.protectnetwork.org DE420842A08EFBD11B5C16CAF2059FFC-0186 116ee8c1c51d40dbb821299b3055c18b 38b2ae602cb643fb91485211e10752fc grouperExternal > - edu.internet2.middleware.grouper.exception.StemNotFoundException: Can't find stem by uuid: '9a48ab6986634a159aa6b82428acc518'
at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3StemDAO.findByUuid(Hib3StemDAO.java:1279)
at edu.internet2.middleware.grouper.StemFinder.findByUuid(StemFinder.java:190)
at edu.internet2.middleware.grouper.StemFinder.findByUuid(StemFinder.java:166)
at edu.internet2.middleware.grouper.ui.actions.PopulateStemPriviligeesAction.grouperExecute(PopulateStemPriviligeesAction.java:234)
at edu.internet2.middleware.grouper.ui.actions.GrouperCapableAction$1.callback(GrouperCapableAction.java:217)
at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3TransactionDAO$1.callback(Hib3TransactionDAO.java:51)
at edu.internet2.middleware.grouper.hibernate.HibernateSession.callbackHibernateSession(HibernateSession.java:500)
at edu.internet2.middleware.grouper.internal.dao.hib3.Hib3TransactionDAO.transactionCallback(Hib3TransactionDAO.java:41)
at edu.internet2.middleware.grouper.hibernate.GrouperTransaction.callbackGrouperTransaction(GrouperTransaction.java:72)
at edu.internet2.middleware.grouper.hibernate.GrouperTransaction.callbackGrouperTransaction(GrouperTransaction.java:91)
at edu.internet2.middleware.grouper.ui.actions.GrouperCapableAction.grouperTransactionExecute(GrouperCapableAction.java:214)
at edu.internet2.middleware.grouper.ui.actions.GrouperCapableAction.execute(GrouperCapableAction.java:279)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:424)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164)

Note: if you click explore and then try it again, it still fails, until you click somewhere and click back.

Thanks,
Chris