Gvfs is relatively new, and is being actively developed. This bug is sure to be fixed in a future version of gvfs. Until then, if you can set your camera to PTP mode, or set it as a USB mass storage device, it might work better. Better yet, use a card reader, which can be as much as 5-10 times faster compared to downloading directly from the camera.
On older versions of Linux that do not include gvfs (such as Ubuntu Hardy Heron, 8.04 LTS), downloading directly from a camera will be impossible. The only exception is unless you can mount your camera as a regular external device.
If Rapid Photo Downloader detects version 0.18.1 or higher of the exiv2 library, it will download Panasonic's RW2 files. If it detects version 0.18.0 or higher of the exiv2 library, it will download Mamiya's MEF files. For Rapid Photo Downloader to be able to detect which version of the exiv2 library your system has, it must either be running pyexiv2 >= 0.2.0, or have exiv2 installed.
If you do not use metadata in the generation of subfolder or image filenames, then it is no problem.
If you do use metadata in the generation of subfolder or image filenames, the program assumes you do so with the expectation they will be present in the images. If metadata is used to generate subfolders, or is the only way to create unique image filenames, then the image will not be downloaded. If some of the image filename can still be generated using elements that change (such as the filename), then the image will be downloaded, and a warning will be issued.
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