Hello Everyone,
I have a single front end and single SQL server for my SharePoint 2013 deployment. I also have Office Web Apps setup and running. However after installing SP 1 and the latest September 2014 CU it appears our users are seeing the below prompt
when open a Word doc in Office Web Apps.

However I am finding that if they use IE 9 or 10 and even Firefox everything works normal. This appears to be affecting just Word.
As for my Office Web Apps server it is still at Version 15.0.4420.1017 (RTM)
If I need to update my Office Web Apps server what order should i do. SP1, July, then Sept?
Thanks,
Ian...