I'm sorry you are having such awful problems, Harmen, but I think it is all due to the conversion that is happening in the background.  It should be done by next week sometime.  Maybe you can dust off your Firefox just for this week, so you don't have much catching up to do.  It seems that the programmer are a bit puzzled about this.  I will keep asking, and hope it gets better.

Fractals will always amaze me!