horizontalScrolling issue

[haikel9]

Hello,
when I set "horizontalScrolling : true" I get the following error :
Uncaught DOMException: Failed to execute 'removeChild' on 'Node': The node to be removed is not a child of this node. at HTMLDivElement.<anonymous> (http://.../enscroll/enscroll-0.6.2.min.js:3:11283)

Here is the way I'm using it :
$(self.m_jTreeContainer).enscroll({ horizontalScrolling: true, verticalTrackClass: 'vtrack', verticalHandleClass: 'vhandle', horizontalTrackClass: 'htrack', horizontalHandleClass: 'hhandle' });

Could you help me ?

Thanks in advance.