Why does photoshop no longer save over my network

Question

I have recently purchased 2 mac minis as retouching stations.
-running 10.10.2
-other computer and host computer on 10.9.5
-running a mix of CS5, CS6, and CC
all of our systems can, over a network, access a raid, grab a file, work on it and hit save
the 2 yosemite stations get permission errors.
Yes the permissions are set correctly everywhere. this is only an issue with tees 2 new stations, out of seven.
I read about it all over, a serious damper in our work flow as a catalog house...
Adobe seems to have wiped it's hands of it. 
Has anybody found a solution, I have read formatting my RAID to EXfat can solve it, but that it a not very reliable platform
Anybody?
Thanks

Answer 1

What protocol are you using? AFP or SMB?
Truth be told, there have always been issues saving files from Photoshop over a network share point. It works some times, with some Photoshop and OS X versions, and in others it doesn't work, due to permissions or other errors. The relatively foolproof way to work is to edit and save everything local, and then copy files to the network drive when you're done working on them, rather than continually saving over a network share.