Photoshop aligns the raw files correctly, but stalls and produces an error after hitting "Tone in ACR". The error messages says something like "Couldn't complete the command due to a program error".
I uninstalled Photoshop CC as well as Lightroom (as I suspected a Camera Raw error) and re-installed both applications, but the problem persist.
This is a known issue and should be fixed in a x.5.1 release sooner rather than later, along with a few more bugs.
A couple workarounds:
1) If you want a 16-bit image from HDR Pro then uncheck Tone in ACR in the HDR Pro panel, then click OK, and you'll have a 32-bit image open in PS. Save that image as a 32-bit TIF and set the Camera Raw preferences to open all TIFs, then open the TIF in PS and it'll open in the ACR plug-in on the way in and you can tone it then click Open and it'll be a 16- or 8-bit image depending on your ACR workflow options.
2) If you want to retain a 32-bit image, then do the first few steps, then after saving the TIF, import it into Lightroom and you'll be able to tone it, there, just fine, and you can reopen it in PS going through ACR on the way in, if need be, depending on your ACR-TIFF-handling preference. You also will need to turn off PS / Prefs / File Handling / Use Camera Raw for Toning from 32-bit to 16/8-bit images if you want to use the old 32-bit toning.
Ok, then, yours is operating different than mine was when I tested the two options I posted. For me, a 32-bit TIF opens in ACR on the way into PS if I have All TIFs set in the ACR TIF Handling.
My TIF saving options are, first on Save As: Include Linear ProPhotoRGB, then for TIFF Options: 32-bit (Float), LZW, Interleaved, Mac, Layer Compression n/a because no layers.
the two options you posted yesterday indeed worked for me. However, a saved 32-bit TIF opens in ACR (on the way into PS) as an (ugly) 8-bit 'conversion'. Is there a setting that will prevent this from happening? Is there another place to control ACR than via Photoshop/Preferences?
Thank you in advance for your reply.
The bit-depth and color profile ACR converts its edited data to when you open it in PS is controlled in the workflow options, the blue link, at the bottom center of ACR, below the main image area. Is this what you're talking about?
You can get into ACR preferences within ACR via Ctrl/Cmd-K with the plug-in open.
Correct! I was wondering whether there's a more 'central' place for controlling ACR (it being shared with PS and LR as I understand it).
I also noticed that after the recent update, and following your suggestions on how to handle 32-bit files in ACR on the fly-in to PS, an about 300MB 32-bit TIF is 'converted' into a 8-bit, sometimes into a 16-bit file, on the way into ACR. The same file that is, on repeated imports, and without changing any settings.