I have script error when I change IE version meta data

Hello.
I changed meta data
from IE version 7

I have no script error when meta version is IE7 but If i change this it IE=10 i have a script error.

dhtmlxtree.js this.parentObject.style.overflow=“hidden” is making null error.

Please let me know what is problem.

thank you

Unfortunately the problem cannot be reconstructed locally.
Could you please, provide a complete demo, where the problem can be reproduced.
Here you can find a tutorial about creating a complete demo:
docs.dhtmlx.com/tutorials__auxi … pport.html