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[DHTMLXTree] Conflict when dynamically opening 2 or more nodes in the same time

I use tree.openAllItemsDynamic(nodeId) which seems to conflict with other tree.openItem(nodeId) when being executed in the same time. Is it normal? How come I usually (not always) get something like this

Javascript ErrorThe next error ocured :
'that.G_node.id' is null or not an object in https://localhost:8443/treecontroller?Action=LoadTree&japee.actionContext=6 at line 294

whenever that happens?

Isn't there a way to kind of lock the tree when nodes are being dyn loaded?

I tried to capture the onclick event, but it doesn't look like it's possible to prevent an opening by unfolding nodes with the mouse.


An input?



Thanks

>>Is it normal?

It is expected. Opening itself is not harmful, but any dyn. loading operation ( which can be triggered by opening ) will break openAllItemsDynamic chain and may cause mentioned error
You can lock whole tree on time of opening - can be done by 

tree.attachEvent("onXLE",function(){
    tree.lockTree(false);
});
...
tree.lockTree(true);
tree.openAllItemsDynamic(id);

( lockTree is a part of dhtmlxtree_li.js )

Isn't the tree lock op part of the pro version?

Yes, it is part of pro version. 
( technically it just renders transparent DIV over the tree's area, so it can be easily reflected with custom HTML|javascript )

I was looking for a slightly subtler solution...

My tree has got to be locked for certain actions, but still respond for some non-critical requests; otherwise, what's the point of ajaxyfing it?

The tree can load multiple branches at same time ( user can continue opening items, there is no need to wait while previous one loaded ) - the problem above related only to openAllItemsDynamic command.