Whenever I upload files to the remote site the file is shortened and unusable. This is on Windows 8.1 64bit. This happens on each client I have tried. e.g. a 22k file is reduced to 4k and so is useless. 
 The same files upload OK on Windows XP using old Terrapin client. 
 I have not tried Core yet. 
Does anyone one have experience of the same problem?  Has anyone any ideas?