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☆ A M B ☆
- 2,213 Posts
You have a missing/corrupt file that is causing that error. Firefox is just failing differently than IE9.
I would suggest re-uploading the manager style folder (manager/media/style/MODxCarbon/xxxxxx), which should correct the problem.
Thanks for your reply. It turned out to be a few missing images under manager/media/style/MODxCarbon/images/tree folder that had been added with the upgrade. I usually don't upload the images to try and save time as upgrades can be a pain and usually the images don't change. My bad......