Hi Bryn,
Normally, there should be no problems with Exiftool under Windows 10. Have you seen the section on Exiftool in the package vignette (see
here)?. You should download and install the Stand-alone installer (instruction can be found
here).
If your problem persists, please share the code you ran. Knowing which function caused the error will help find the problem quickly.
I'd like to add one thing to what Hugo said. It would be easier if you put exiftool.exe into a system directory (one of the directories contained in your PATH variable, e.g. C:/Windows). Windows (through R) will then be able to find Exiftool by default without the need to run these 2 lines in every R session.
And here's a second point: if you create an Exiftool directory in your image directory, don't put it into a directory next to your station directories (e.g. myStudy/renamed_images/Exiftool), but give it a directory of its own (e.g. .../myStudy/Exiftool). camtrapR would then assume that "Exiftool" is one of your stations.
Another potential problem is the Windows default of hiding known file extensions. In renaming Exiftool, one can inadvertedly rename exiftool.exe to exiftool.exe.exe (because the second .exe is hidden). It can be changed in the Windows folder options. See
here for instructions.
Best,
Jürgen