I have the latest LR and still use PSCS5.1 running on Win8. Both programs are up to date.
When I have a single raw image (Sony RX100) selected in LR and choose "Edit in... Edit in Adobe Photoshop CS5.1...", I'm presented with the option to Render in Lightroom, which I use. This opens a TIF in PS per my LR settings, all is good.
When I select multiple raw images in LR and choose "Edit in... Merge to Panorama in Photoshop..." I am not presented with the option to Render in Lightroom, only "Open Anyway", or "Cancel". Selecting Open Anyway launches PSCS and passes the ARW files, but photoshop then fails to take any action since it does not have a recent version of ACR.
As a work around I can instead create TIFs and then use merge to panorama with those, but I would like to skip that step if possible.
Am I doing something wrong or is the price of not running the latest version of PS?
thx, Dave