08-17-2017 02:50 PM - edited 08-17-2017 02:50 PM
Thanks, I agree that this is not a "system" issue.
FWIW, these are the pertinent specs on this system, as reported by Belarc Advisor: 3.20 gigahertz Intel Core i5-4460, 24508 Megabytes Usable Installed Memory. This is well above the minimum specs required by DPP 4.
This problem has occured with previous versions of DPP4 and on other systems. I have done uninstall/reinstall on previous versions, but not with this one. I'll do it as soon as I can and I report back.
08-17-2017 08:33 PM
Am I undestanding your post correctly that it only happens with JPEGs not created in-camera or by DPP?
08-18-2017 06:46 AM
Maybe its just not a universal editor since it does append recipe date to the JPEG and TIFF iles it edits.
08-25-2017 01:52 PM
09-18-2017 12:01 PM
I have the same problem with jpgs created by GIMP. Every other graphics program, including DPP 3, will open them, but DPP 4 will not. It gives the "?" icon. This posed a huge problem for me when I upgraded to DPP 4, as I use DPP to print my images on my Canon printer. But, once I realized I could print them using DPP 3, I have used this as a workaround.
I just did some more investigating, and found the root cause of the problem. Check the EXIF metadat for the compression type. DPP 4 seems to be able to recognise JPG baseline DCT, but not JPG progressive DCT. You can set this in the export options in GIMP by unchecking the "progressive" checkbox in the advanced JPG export settings. With the checkbox not checked, DPP 4 recognizes my GIMP jpgs now.