FF12 - cannot load in My Filters

Upgraded to FF 12. Then loaded in all my filters that I have created in previous versions by selecting fr om the main menu:

Tools > Restore Filters and Settings . . .

navigated to wh ere my filters were stored and clicked OK.

The filters loaded and were present, but I got all kind of errors, when loading an external image.

I reinstalled FF12 and noticed that things were workeing.
I repeated the Restore Filters and Settings . . . but with the same results.

But now, how do I Restore my Filters into version 12, without the galore of errors?

I attached one of the error message I got.
Also, I was unable to create a bug report (Acces denied).

Thanks for any help

Thanks.
I just did an update of FF 12 and now it all seems to work again.

best, Beat