[CLOSED] Error when expand treepanel Node

[AdminAISN]

I have an error with a treepanel. When I click on a Node to Expand it it does not refresh. And nothing works any more. It is at the third level. I recieve an uncaughted error: can not read property "internalId" or undifined. I thought it was a dupplicate ID but all the NodeIDs are unique. Someone can Help me solve that? Thanks.

[Baidaly]

Hello!

It's difficult to say something certain without an example to reproduce. Could provide it?

Also, try to set ResourceManager's ScriptMode to Development to get more information about the exception:

<ext:ResourceManager runat="server" ScriptMode="Development" />