[opencms-dev] (TypeError): Cannot call method 'zb' of null

[yangguang]

hi


 yesterday  I re-installed v8.0.1 . everything goes well except one .


 when I use the ADE to modify the sites/defaults/index.html's properties ->Template columns , it is in the wrong with the error of "(TypeError): Cannot call method 'zb' of null". 
in the opencms.log is :
14 Jul 2011 09:32:12,468 ERROR [ org.opencms.gwt.CmsLogService:  66] Client LOG (Host 127.0.0.1, Address 127.0.0.1, Ticket 1310607132459): (TypeError): Cannot call method 'zb' of null
Unknown.Pe(Unknown Source)
Unknown.nyb(Unknown Source)
Unknown.gdc(Unknown Source)
Unknown.Odc(Unknown Source)
Unknown.OMb(Unknown Source)
Unknown.JMb(Unknown Source)
Unknown.vOb(Unknown Source)
Unknown.iic(Unknown Source)
Unknown.fid(Unknown Source)
Unknown.Xnd(Unknown Source)


I modify the other folder's property , it works well . just only the simple file occurs error. 


what should I do ? thanks


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