I have the same error message and problem. Is there a solution to this yet?
Please attach a full session log file showing the problem (using the latest version of WinSCP).
To generate the session log file, use
/log=path_to_log_file command-line argument. Submit the log with your post as an attachment. Note that passwords and passphrases not stored in the log. You may want to remove other data you consider sensitive though, such as host names, IP addresses, account names or file names (unless they are relevant to the problem). If you do not want to post the log publicly, you can mark the attachment as private.
Here is the file, thank you.
You have "Existing only" synchronization option enabled in global configuration:
> 2017-01-31 13:49:28.457 Script: synchronize local -preservetime -delete D:\nsccScratch /scratch/users/astar/ihpc/cheahwl/crys/and-lev/fmix60
< 2017-01-31 13:49:28.458 Script: Using configured synchronization options different from factory defaults.
< 2017-01-31 13:49:28.458 Script: Comparing...
. 2017-01-31 13:49:28.458 Collecting synchronization list for local directory 'D:\nsccScratch' and remote directory '/scratch/users/astar/ihpc/cheahwl/crys/and-lev/fmix60', mode = Local, params = 0x7 (Delete, NoConfirmation, ExistingOnly)
In general, you should use
switch to isolate the script from GUI configuration: