New related issue, with everything up to date (both one-drive and boxcryptor) same errors, however, this is because the defualt "open with" on OSX seems to be OneDrive's File opener, which craps everything out.
run this in terminal to reset the "open-with" databases, but it seems to be overwritten daily.
find /System/Library/Frameworks -type f -name "lsregister" -exec {} -kill -seed -r \;