error from qgis

An error has occured while executing Python code:

Traceback (most recent call last):
  File "/home/skoggiesue/.qgis//python/plugins/openlayers_plugin/openlayers_ovwidget.py", line 213, in __signal_pbCopyKml_clicked
    rect = core.QgsGeometry.fromWkt(wkt).boundingBox()
AttributeError: 'NoneType' object has no attribute 'boundingBox'

Python version:
2.7.4 (default, Apr 19 2013, 18:30:41)
[GCC 4.7.3]


QGIS version:
1.8.0-Lisboa Lisboa, exported

Python path: ['/usr/share/qgis/python', '/home/skoggiesue/.qgis//python', '/home/skoggiesue/.qgis//python/plugins', '/usr/share/qgis/python/plugins', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PILcompat', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/home/skoggiesue/.qgis/python/plugins/mmqgis/forms', '/usr/share/qgis/python/plugins/fTools/tools']