Error downloading >4GB Files on NTFS

SmartFTP v: 1.5.988

I tried to resume a broken transfer of a 4.35GB file and got this error message:

227 Entering Passive Mode (*).
Opening data connection to * Port: 4469
REST 4284798348
501 Syntax error in parameter: '4284798348' is not a valid integer value.
Transfer failed.

Both Files are located on a NTFS partition (source and download destination).

I am connecting to a server running v7.7.x of NetStream FTP Server (Pro/Licensed) available at http://www.fastream.com

All other files download/upload fine.

The message after "501" is a response from the server. It seems the server is buggy and does not support resuming of such big files due to some parsing / overflow error.