I am having the exact same problem with the project properties not saving after editing anything.
The only way around it I found was to immediatley open another project after editing the properies, then switching back.
This only started happening when we upgraded from Arch 2009 to Arch 2012. Same network, same operating systems. Nothing is set to read only.
Anyone have any idea on the fix???
Access a broad range of knowledge to help get the most out of your products and services.