Hi @odrive2,
The way split files work is that they are uploaded in chunks and then a manifest file is created to track these chunks and determine how to reassemble them. You can get a message like the one you are seeing if odrive cannot find one of the chunks that is listed in the manifest, or if Amazon is having issues listing all of the chunks (if there are a ton).
I have seen this happen when a user inadvertently deleted a chunk when trying to free up space after the Amazon Drive 1TB cap was announced. I have also seen this when Amazon throws an exception when trying to list all of the chunks, or another exception during the split file scan. I would expect this type of exception to be intermittent, though, and not happen every time.
There is a bunch of information about IFS (XL/Split Files) here, if you are curious about the format: https://medium.odrive.com/cloud-upload-was-a-struggle-until-today-bb267cb5566e
I created a python utility to reassemble IFS file outside of odrive here: https://github.com/amagliul/odrive-utilities/blob/master/assemble_xl_file.py
How large of a file is this?
When you try to download it, does it throw an exception right away, or does it take some time? How long?