What version of PS are you using? The Latest PS CC (2014) will be hosting the ACR 9.0 Plugin if updated.
What version of LR are you using? The latest LR 6 or LR CC (2015) has the equivalent of ACR 9.0 built in to the application
LR 5.7.1 has the equivalent of ACR 8.7.1
You are correct…..that is what I have. Thanks so tghat is not the issue.
This is the problem
iMac Desk top Yosemite. This is what is happening now. All images are on my main HD. Computer is backed up via time machine to an external HD.
LR works fine. PS opens in the background when PS is open and I open a new DNG image from LR. If I open a PS file from my desk top, right click open in PS it opens in PS. If I open a .jpg or .tiff from LR PS opens in in the front. If I open a dng from LR to PS, PS opens in the background.