Firefox Community Forum

I am getting the following error after updating my Firefox installation: XULRunner This profile was last used with a newer version of this application. Please create a new profile.

I have tried creating a new profile and deleting the old ones, restarting Firefox, and even uninstalling Firefox and reinstalling it. The error still persists.

How can I get the error to quit popping up every time I open Firefox?

Hi,

just for understanding:

Why can the Firefox source code (view-source) of a website be nearly three times the size compared with Chrome/Opera or when I save the Firefox source code marked and copied and then pasted and saved via an editor?

Example: Firefox 546,6 KiB Chrome/Opera 204,3 KiB via Editor 204,3 KiB (marked and copied Firefox source code)

Best

Peter