All:
I’m having the same issue on Ubuntu 19.04. Specifically, I receive the error “Unexpected error doing DownloadGDBlob: [filename]: Mismatched checksum,” as shown in the screenshot below. (I left out the filename.) I’m still on the free trial, so I’m seriously hoping that this can be resolved prior to the end of my trial period so that I can seriously consider purchasing a full license. If I can’t sync my files at all (which I can’t), then the software is not useful.
Thanks.
Jesse