Problem with tree

Webix JS
1

Hello there,
i work with your tree widget.
Since a view days it doesn’t work anymore.
Was there an update?
When i use a older version of webix it runs very well.

2

We have released Webix 3.0 few days ago.

Check http://docs.webix.com/migration.html
Most probably you are using non-strict JSON data for the tree.

3

Thanks a lot!
That was the reason why it doesn´t run.
A validater for json show me my problems.