Since a few days saving a filter leads to the error page 404 - page not found.
The same happens if you reload the filter or try to click on the link of it.
Please fix ASAP.
There must have been an errornous update last week. I never had a problem with it before.
I always decline the google spy functions - I assume that does also not work there correctly because sometimes the page stays blocked up to 20 seconds so that I cannot change the sort.