Looks like the file is failing CRC checks after 2-4hrs of upload...
[22:36:45] Operation Begin
[22:36:45] Resolving host name "ftp.ammahls.com"
[22:36:45] Connecting to 216.97.239.90 Port: 21
[22:36:45] Connected to ftp.ammahls.com.
[22:36:45] 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
[22:36:45] 220-You are user number 4 of 50 allowed.
[22:36:45] 220-Local time is now 04:36. Server port: 21.
[22:36:45] 220-IPv6 connections are also welcome on this server.
[22:36:45] 220 You will be disconnected after 15 minutes of inactivity.
[22:36:45] USER amckern0
[22:36:45] 331 User amckern0 OK. Password required
[22:36:45] PASS (hidden)
[22:36:46] 230 OK. Current restricted directory is /
[22:36:46] SYST
[22:36:46] 215 UNIX Type: L8
[22:36:46] Detected Server Type: UNIX
[22:36:46] RTT: 183.891 ms
[22:36:46] FEAT
[22:36:46] 211-Extensions supported:
[22:36:46] EPRT
[22:36:46] IDLE
[22:36:46] MDTM
[22:36:46] SIZE
[22:36:46] MFMT
[22:36:46] REST STREAM
[22:36:46] MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
[22:36:46] MLSD
[22:36:46] AUTH TLS
[22:36:46] PBSZ
[22:36:46] PROT
[22:36:46] ESTA
[22:36:46] PASV
[22:36:46] EPSV
[22:36:46] SPSV
[22:36:46] ESTP
[22:36:46] 211 End.
[22:36:46] Detected Server Software: PureFTPd
[22:36:46] PWD
[22:36:46] 257 "/" is your current location
[22:36:46] CWD /public_html/downloads/fakefactory/4
[22:36:46] 250 OK. Current directory is /public_html/downloads/fakefactory/4
[22:36:46] PWD
[22:36:47] 257 "/public_html/downloads/fakefactory/4" is your current location
[22:36:47] Remote file exist check: "cm4op1.7z".
[22:36:47] MLST cm4op1.7z
[22:36:47] 250-Begin
[22:36:47] type=file;size=436797440;modify=20121221123515;UNIX.mode=0644;UNIX.uid=32318;UNIX.gid=32320;unique=808g61f4013; cm4op1.7z
[22:36:47] 250 End.
[22:36:47] Source File: Size=2753655479, Date Modified=2012-12-21T12:35:15
[22:36:47] Destination File: Size=436797440, Date Modified=2012-12-21T12:35:15
[22:36:47] RecentTime=2013-01-10T08:49:28
[22:36:47] Rule "IF Destination Time=Equal AND Size=Smaller AND Transfer=No Matter THEN Resume" matched. Action="Resume".
[22:36:47] TYPE I
[22:36:47] 200 TYPE is now 8-bit binary
[22:36:47] PASV
[22:36:47] 227 Entering Passive Mode (216,97,239,90,120,1)
[22:36:47] Opening data connection to 216.97.239.90 Port: 30721
[22:36:47] REST 436797440
[22:36:47] 350 Restarting at 436797440
[22:36:47] STOR cm4op1.7z
[22:36:48] 150 Accepted data connection
[22:36:54] Data error (cyclic redundancy check).
[22:36:54] 0 bytes transferred. (0 bytes/s) (00:00:06)
[22:36:54] Transfer failed.
[22:36:54] Operation End
[22:37:24] Operation Begin
[22:37:24] Remote file exist check: "cm4op1.7z".
[22:37:24] MLST cm4op1.7z
[22:37:24] 250-Begin
[22:37:24] type=file;size=436797440;modify=20121221123515;UNIX.mode=0644;UNIX.uid=32318;UNIX.gid=32320;unique=808g2bf1706; cm4op1.7z
[22:37:24] 250 End.
[22:37:24] Source File: Size=2753655479, Date Modified=2012-12-21T12:35:15
[22:37:24] Destination File: Size=436797440, Date Modified=2012-12-21T12:35:15
[22:37:24] RecentTime=2013-01-10T11:36:54
[22:37:24] Rule "IF Destination Time=Equal AND Size=Smaller AND Transfer=No Matter THEN Resume" matched. Action="Resume".
[22:37:24] PASV
[22:37:24] 227 Entering Passive Mode (216,97,239,90,45,29)
[22:37:24] Opening data connection to 216.97.239.90 Port: 11549
[22:37:24] REST 436797440
[22:37:25] 350 Restarting at 436797440
[22:37:25] STOR cm4op1.7z
[22:37:25] 150 Accepted data connection
[22:37:31] Data error (cyclic redundancy check).
[22:37:31] 0 bytes transferred. (0 bytes/s) (00:00:06)
[22:37:31] Transfer failed.
[22:37:31] Operation End
[02:17:15] Operation Begin
[02:17:15] Resolving host name "ftp.ammahls.com"
[02:17:16] Connecting to 216.97.239.90 Port: 21
[02:17:16] Connected to ftp.ammahls.com.
[02:17:16] 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
[02:17:16] 220-You are user number 5 of 50 allowed.
[02:17:16] 220-Local time is now 08:17. Server port: 21.
[02:17:16] 220-IPv6 connections are also welcome on this server.
[02:17:16] 220 You will be disconnected after 15 minutes of inactivity.
[02:17:16] USER amckern0
[02:17:17] 331 User amckern0 OK. Password required
[02:17:17] PASS (hidden)
[02:17:17] 230 OK. Current restricted directory is /
[02:17:17] SYST
[02:17:17] 215 UNIX Type: L8
[02:17:17] Detected Server Type: UNIX
[02:17:17] RTT: 228.906 ms
[02:17:17] FEAT
[02:17:18] 211-Extensions supported:
[02:17:18] EPRT
[02:17:18] IDLE
[02:17:18] MDTM
[02:17:18] SIZE
[02:17:18] MFMT
[02:17:18] REST STREAM
[02:17:18] MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
[02:17:18] MLSD
[02:17:18] AUTH TLS
[02:17:18] PBSZ
[02:17:18] PROT
[02:17:18] ESTA
[02:17:18] PASV
[02:17:18] EPSV
[02:17:18] SPSV
[02:17:18] ESTP
[02:17:18] 211 End.
[02:17:18] Detected Server Software: PureFTPd
[02:17:18] PWD
[02:17:18] 257 "/" is your current location
[02:17:18] CWD /public_html/downloads/fakefactory/4
[02:17:18] 250 OK. Current directory is /public_html/downloads/fakefactory/4
[02:17:18] PWD
[02:17:19] 257 "/public_html/downloads/fakefactory/4" is your current location
[02:17:19] Remote file exist check: "cm4op1.7z".
[02:17:19] MLST cm4op1.7z
[02:17:19] 250-Begin
[02:17:19] type=file;size=436797440;modify=20121221123515;UNIX.mode=0644;UNIX.uid=32318;UNIX.gid=32320;unique=808g61f4013; cm4op1.7z
[02:17:19] 250 End.
[02:17:19] Source File: Size=2753655479, Date Modified=2012-12-21T12:35:15
[02:17:19] Destination File: Size=436797440, Date Modified=2012-12-21T12:35:15
[02:17:19] RecentTime=2013-01-10T11:37:31
[02:17:19] Rule "IF Destination Time=Equal AND Size=Smaller AND Transfer=No Matter THEN Resume" matched. Action="Resume".
[02:17:19] TYPE I
[02:17:20] 200 TYPE is now 8-bit binary
[02:17:20] PASV
[02:17:20] 227 Entering Passive Mode (216,97,239,90,16,147)
[02:17:20] Opening data connection to 216.97.239.90 Port: 4243
[02:17:20] REST 436797440
[02:17:21] 350 Restarting at 436797440
[02:17:21] STOR cm4op1.7z
[02:17:21] 150 Accepted data connection
[02:17:28] Data error (cyclic redundancy check).
[02:17:28] 0 bytes transferred. (0 bytes/s) (00:00:06)
[02:17:28] Transfer failed.
[02:17:28] Operation End
[04:09:09] Operation Begin
[04:09:10] Resolving host name "ftp.ammahls.com"
[04:09:10] Connecting to 216.97.239.90 Port: 21
[04:09:10] Connected to ftp.ammahls.com.
[04:09:11] 220---------- Welcome to Pure-FTPd [privsep] [TLS] ----------
[04:09:11] 220-You are user number 4 of 50 allowed.
[04:09:11] 220-Local time is now 10:09. Server port: 21.
[04:09:11] 220-IPv6 connections are also welcome on this server.
[04:09:11] 220 You will be disconnected after 15 minutes of inactivity.
[04:09:11] USER amckern0
[04:09:11] 331 User amckern0 OK. Password required
[04:09:11] PASS (hidden)
[04:09:11] 230 OK. Current restricted directory is /
[04:09:11] SYST
[04:09:12] 215 UNIX Type: L8
[04:09:12] Detected Server Type: UNIX
[04:09:12] RTT: 256.685 ms
[04:09:12] FEAT
[04:09:12] 211-Extensions supported:
[04:09:12] EPRT
[04:09:12] IDLE
[04:09:12] MDTM
[04:09:12] SIZE
[04:09:12] MFMT
[04:09:12] REST STREAM
[04:09:12] MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
[04:09:12] MLSD
[04:09:12] AUTH TLS
[04:09:12] PBSZ
[04:09:12] PROT
[04:09:12] ESTA
[04:09:12] PASV
[04:09:12] EPSV
[04:09:12] SPSV
[04:09:12] ESTP
[04:09:12] 211 End.
[04:09:12] Detected Server Software: PureFTPd
[04:09:12] PWD
[04:09:12] 257 "/" is your current location
[04:09:12] CWD /public_html/downloads/fakefactory/4
[04:09:13] 250 OK. Current directory is /public_html/downloads/fakefactory/4
[04:09:13] PWD
[04:09:13] 257 "/public_html/downloads/fakefactory/4" is your current location
[04:09:13] Remote file exist check: "cm4op1.7z".
[04:09:13] MLST cm4op1.7z
[04:09:14] 250-Begin
[04:09:14] type=file;size=436797440;modify=20121221123515;UNIX.mode=0644;UNIX.uid=32318;UNIX.gid=32320;unique=808g61f4013; cm4op1.7z
[04:09:14] 250 End.
[04:09:14] Source File: Size=2753655479, Date Modified=2012-12-21T12:35:15
[04:09:14] Destination File: Size=436797440, Date Modified=2012-12-21T12:35:15
[04:09:14] RecentTime=2013-01-10T15:17:28
[04:09:14] Rule "IF Destination Time=Equal AND Size=Smaller AND Transfer=No Matter THEN Resume" matched. Action="Resume".
[04:09:14] TYPE I
[04:09:14] 200 TYPE is now 8-bit binary
[04:09:14] PASV
[04:09:14] 227 Entering Passive Mode (216,97,239,90,23,221)
[04:09:14] Opening data connection to 216.97.239.90 Port: 6109
[04:09:14] REST 436797440
[04:09:15] 350 Restarting at 436797440
[04:09:15] STOR cm4op1.7z
[04:09:15] 150 Accepted data connection
[04:09:21] Data error (cyclic redundancy check).
[04:09:21] 0 bytes transferred. (0 bytes/s) (00:00:06)
[04:09:21] Transfer failed.
[04:09:21] Operation End