Protege 2.1 Beta update (build 195)

There's a new beta build available on our Web site: 
http://protege.stanford.edu/download/prerelease/index.html

Changes
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1. The system now prints the text for "cannonical" name rather than the 
"historical" name for the file encoding on startup.

2. Improved the error message for handling a missing JDBC driver.

3. Launching a browser for displaying help now works on the Mac.

4. Fixed a number of problems with Undo, most of which were related to UI 
operations requiring multiple Undo actions. All UI operations should now 
just require a single "undo" action to reverse. Please let us know if you 
encounter situations where this is not the case. Note that this change 
required some modifications to the "handleRemove" protected methods for 
most of the standard cardinality multiple widgets. If you've subclassed one 
of the standard widgets to override this functionality, your widget may now 
be broken.