When I connect my iPhone to my PC, I see the folder structure under Apple iPhone in Directory Open, with all the relevant subfolders. All the files contained in the folders appear in the lister window.
If I have a split screen and select a group of files from the iPhone and drag them over into a local folder on my PC, about 1/2 the time nothing happens. No file move dialog appears, no files are copied.
I have toggled the mtp_enable flag, this does not have any effect.
Is there any suggestions or known issues with the current version of Opus (12.19) and iOS 13.3 in this regard?
Thanks Leo. I tried the Copy Files button and nothing happens. I selected a lot of files (786) and nothing. I tried selecting a small subset of files (100 jpg images) and it got about half way through and suddenly quit without warning. I'm starting to think maybe something is funny with the phone storage?
I tried File Explorer and it was basically the same, itv started to work (dragged one the folder under DCIM to the desktop). It started working but after about 1 minute it terminated with an error window about "unable to reach device".
So it doesn't appear to be the software but more likely something on the phone. I'll figure out another way to xfer images off and into my PC.
It might be worth trying a different cable and/or USB port.
On Android it's usually easier to install an FTP server on the phone and download files wirelessly via FTP, but I don't know if Apple lets you do that.
On the iPhone, Settings/Photos and select Keep Originals (default is Automatic which performs some sort of compatibility check or conversion, I'm not sure but turn it off by selecting Keep Originals).
Reconnect your iPhone and it now works without any issues.
Thank you again for your responses, I greatly appreciate your help.
fairorth's solution worked for me -- thanks to you both!
I'll document my experience in case it helps others doing Googling for the fix, since it's slightly different than the above...
--Plugging in my iPhone 7 running iOS 13.5 didn't do anything in DOPUS -- no iPhone entry under This PC. Toggling the mtp_enable setting didn't change the behavior at all. I tested multiple times. First time I can ever recall plugging in a device that can be used as a hard drive and not seeing that reflected in DOPUS.
--I was able to use Autoplay to open up a File Explorer window, though. At that point, dragging files from File Explorer to DOPUS worked for a short time and then errored out as fairorth detailed above.
--Once I selected Keep Originals, DOPUS behaved exactly as expected (i.e. the iPhone entry magically appeared under This PC as a disk). mtp_enable is set to True.
Just hooked up an iPad 2019 with iOS 13.5 and cannot confirm any of the above. All I needed to do on the iPad was to allow access to it. It took a few seconds for the dialog to appear, but the MTP connection worked right away with normal speeds.
I'd be truly surprised if the Photos settings had anything to do with the device availability. How could file formats have any influence? These settings apply to totally different layers.