I have just downloaded liferay 6.0.6 from liferay (bundle with tomcat) webpages.
Description how to reproduce the error>
1, install liferay bundle on PC
2, log-in as administrator ([email protected])
3, within the dock bar go to manage/setting
4, select item: staging and choose staging type: local staging
5, confirm by clikcing on save
the staging show kernel exception - please see enclosed image