Fiori Launchpad error in Firefox

Hi,

Our Fiori Launchpad has a custom theme designed for our company.

The launchpad loads perfectly well in Chrome, Safari and Internet Explorer. However, when we open it in Firefox 40.0.3, the custom theme is not loading and see just the html portion of our app. When I look into the console, I see this error.

Error: found in negative cache: 'sap/ui/core/Core.js' from undefined/sap/ui/core/Core.js: Error: Cannot initialize twice core-min-0.js:85:13889
TypeError: this.boot is not a function

Thanks

Senthil