Received via automatic error reporter. Logging here till investigated/resolved.

* Fri Jan 20 13:04:41 2012 * Traceback (most recent call last): File %22prefdlg.pyo%22, line 1292, in OnChoice File %22ed_msg.pyo%22, line 321, in PostMessage File %22extern/pubsub.pyo%22, line 798, in sendMessage File %22extern/pubsub.pyo%22, line 483, in sendMessage File %22extern/pubsub.pyo%22, line 321, in sendMessage File %22/Users/laguipemo/Library/Application Support/Editra/plugins/PyStudio-0.4-py2.6.egg/PyStudio/Debugger/ExpressionsShelfWindow.py%22, line 95, in OnThemeChanged NameError: global name VariablesShelfWindow is not defined

I think this can be trivially fixed by changing VariablesShelfWindow to ExpressionsShelfWindow as I think it's a typo so I've checked in this change.