For those that have had difficulty viewing images, this is the latest response from familysearch.org
We understand that even when changing to Firefox you have not been able to see all the films you are searching.
Our engineers advise us that some of these collections have been taken down for a few days to make corrections and to digitze some. They should only take up to four days.

We have replicated your search this morning and some are already back up and working.
Thank you for  being patient with us as we make these improvements.  We hope the collections you need are working for you by the end of this week.FamilySearch
Historical Records