Magento Backend Manage Category Not Working

[nakuannithelusu]

Hi,

We are using magento 1.9

When you click on the Manage Category, for some reason  i couldnt expand the main category.

I cant even click the main category. Add Sub Categories / Root category is also not working.

Meanwhile when adding a product works well. 

Can anyone help me resolve this issue?

Regards

Rajeshwari

[Tom Robertshaw]

If you open the developer tools of your browser, does it show any javascript errors or network errors for files it's failed to download?

[kgerasimov]

Hello!

First of all I think you are being a little off topic - this board is for hosting and performance discussion.

Did your problem started out of blue. From my personal experience those types of issues happen after you install new plugin or perform an upgrade. 

Tom suggested right - look into Javascript console to see if there are any js errors.