alicar29 wrote:
Similar problem but mine stops at 999mb then freezes. Still wait for response from WD. With so many people compaining of this problem with no apparrant fix other than don’t use WD software I’m about to give up. Problem is I’m not sure exactly where the issue is. Do I switch from IMAC to PC or WD to QNAP or similar.
This problem might not be related and has been dealt with before: http://community.wd.com/t5/My-Cloud/File-does-not-transfer-after-it-reaches-999-00-MB/td-p/897215
The solution is to use the Finder for local uploads to the drive, and not to upload the files via the MyCloud app.
The 512KB limit when uploading files is, at least in my case, happening on remote uploads only (i.e. when using the drive as an actual *cloud* 
