Browsing the pentaho repository, I saw this comment:
http://source.pentaho.org/viewvc/svn...r.jar?view=log

When I went to look at the referenced issue, I came across a permission error:
http://jira.pentaho.com/browse/PPP-2596

Code:
PERMISSION VIOLATION

It seems that you have tried to perform an operation which you are not permitted to perform.

If you think this message is wrong, please consult your administrators about getting the necessary permissions.