Photomerge works great with my computer - 15" 2012 i7 MacBook Pro - 10.10.4
However, if my source photographs are on my external Drobo 5D via Thunderbolt, the photomerge simply does not generate a preview - I wait and wait and wait and nothing moves with the progress-bar.
Anyone else getting this with special externals, such as Drobo, Raid arrays, etc?
Wondering if it might be a Thunderbolt issue, too. I'll check with the USB 3 connection and give it a test...
******update: Just tried USB 3 connection with the Drobo 5D and it's still not generating the preview. Seems to be something with the Drobo array. Ideas?
Retrieving data ...