I have a huge issue with “Failed to write Exif!” error… I have tried with both Pix4D 4.2.26 and 4.3.6 versions without solution. It is supposed that the last one has been fixed about this bug as it is said in: https://support.pix4d.com/hc/en-us/articles/115005738363).
I am using a Windows 10 PC with a I-7 processor…
Best regards! Néstor