Conflict with tabs module

I'm getting an error with the latest version of Tabs 6.x-1.3 when used in conjunction with Popups 6.x-2.x-dev.

Firebug reports the following:

• Drupal.settings.tabs is undefined - Line 13
• var fx = {duration: Drupal.settings.tabs.speed};

I'm using Panel Tabs and on one of the Page's Panels, I have a link that uses Popups to display another Page in a AJAX Popup Window. When I click that link is when I get this error.

I'm guessing it has something to do with the order that the different scripts are loading, however, I'm not sure. I don't get this error when using Popups 6.x-1.3.

See the attached image for reference.

Link to a related issue posted in Tabs' issues tracker.

I am having a similar problem using Popups 6.x-2.x with Tabs Panel Style. I have a file field and autocomplete node reference fields in a popup form that worked before Tabs panel style. now the popup loads but tryig to upload file breaks it.