Javascript conflict/problem

I love the plugin and find it an invaluable debugging aid but am now unable to use it due to what I believe is a javascript conflict (it’s certainly a JS issue).

Here’s what happens:

• Load the page and the blackbox menu shows up as expected
• Click on one of the menu tabs. Nothing happens.

I’ve looked under the hood at the browsers debugger and I see that every time I click on the link I get the following JS error:

Uncaught TypeError: Cannot read property ‘style’ of null

The code that this points to is in the WpDebugBar’s SwitchPanel function:

switchPanel: function(open) {

        for(var i in WpDebugBar.element) {
            document.getElementById("blackbox-"+WpDebugBar.element[i]).style.display = "none";
Uncaught TypeError: Cannot read property 'style' of null
        }

https://www.ads-software.com/extend/plugins/blackbox-debug-bar/