FTP Error: 550 SIZE Command Not Supported
This feature can be disabled by setting:
ftp1.Config("CalculatePercentDone=false");
CalculatePercentDone enables or disables calculating the percent complete for downloads. When set to True, the component sends an FTP "SIZE" command to retrieve the file size before beginning a download. When downloading a large quantity of small files, performance may be increased by disabling this feature.
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