Tooltip javascript Error on linechart

It works on barchart, but on linechart, It dosen’t works.
Both My working page and dhtmlx chart sample page are also occur error.

Message: 'this.h[…].tooltip is null or object
Line: 125
Char: 313
Code: 0
URI: localhost/dhtmlx26/codebase/dhtmlxchart.js

dhtmlxChart Version is 2.6.5


there was a bug in chart. Try to use library that is attached to viewtopic.php?f=8&t=16316 post. It’ll resolve the problem.