Error for "apply buffer" on esearch

I am using 3.1.9 version esearch. When first click on "Apply buffer" button on Spatial Search I get error message instead of show me "There is no result to buffer, please make a graphical or text search first"
I tested on esearch website also got error message (http://gis.calhouncounty.org/FlexVie...ig-eSearch.xml) but if you use this (http://gis.calhouncounty.org/FlexVie...er=3&exprnum=1) you will see the message.
Any ideas to change it? Thanks.

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