I wish it were so easy.
I've narrowed the issue down to larger files, over 100MB. I can transfer smaller files with no issues. Larger files transfer but then create an error when complete.
I use this job to transport compressed DB backups up to 100GB so that wouldn't work for me.
To clarify;
1) I can transfer 9GB files to target FTP server from an FTP client on the source machine, using the same settings.
2) Large file transfers using VC appear to succeed but produce the error, preventing multiple file transfers in the same task/job.