What is causing the error? If I know this then I may be able to create a scenario that always creates the problem.
I have no idea what is causing the error. That's why I have sent you the debug version. I'll send you matching .NET assembly too.
Before posting, please read how to report bug or request support effectively.
Bug reports without an attached log file are usually useless.
What is causing the error? If I know this then I may be able to create a scenario that always creates the problem.
. 2017-06-27 18:29:29.447 --------------------------------------------------------------------------
. 2017-06-27 18:29:29.447 WinSCP Version 5.8.4 RC (Build 6736) (OS 6.1.7601 Service Pack 1 - Windows Server 2008 R2 Standard)
. 2017-06-27 18:29:29.447 Configuration: nul
. 2017-06-27 18:29:29.447 Log level: Normal
. 2017-06-27 18:29:29.447 Local account: ***********
. 2017-06-27 18:29:29.447 Working directory: e:\carltonlive\v10\spclient\common\assemblies
. 2017-06-27 18:29:29.447 Process ID: 239896
. 2017-06-27 18:29:29.447 Command-line: "e:\carltonlive\v10\spclient\common\assemblies\winscp.exe" /xmllog="C:\Users\******\AppData\Local\Temp\4\wscp3AE60.032F0169.tmp" /xmlgroups /nointeractiveinput /dotnet=584 /ini=nul /log="\\ukdews309\usw\live\Vision\**************\FTPOut/ServerLog-20170627-183001.txt" /console /consoleinstance=_241248_31421019_789
. 2017-06-27 18:29:29.447 Time zone: Current: GMT+1, Standard: GMT+0 (GMT Standard Time), DST: GMT+1 (GMT Daylight Time), DST Start: 26/03/2017, DST End: 29/10/2017
. 2017-06-27 18:29:29.447 Login time: 27 June 2017 18:29:29
. 2017-06-27 18:29:29.447 --------------------------------------------------------------------------
. 2017-06-27 18:29:29.447 Script: Retrospectively logging previous script records:
> 2017-06-27 18:29:29.447 Script: option batch on
< 2017-06-27 18:29:29.447 Script: batch on
< 2017-06-27 18:29:29.447 Script: reconnecttime 120
> 2017-06-27 18:29:29.447 Script: option confirm off
< 2017-06-27 18:29:29.447 Script: confirm off
> 2017-06-27 18:29:29.447 Script: option reconnecttime 120
< 2017-06-27 18:29:29.447 Script: reconnecttime 120
> 2017-06-27 18:29:29.447 Script: open ftp://****************** -passive=1 -timeout=15
. 2017-06-27 18:29:29.447 --------------------------------------------------------------------------
. 2017-06-27 18:29:29.447 Session name: **************** (Ad-Hoc site)
. 2017-06-27 18:29:29.447 Host name: *************** (Port: 21)
. 2017-06-27 18:29:29.447 User name: ****** (Password: Yes, Key file: No)
. 2017-06-27 18:29:29.447 Transfer Protocol: FTP
. 2017-06-27 18:29:29.447 Ping type: Dummy, Ping interval: 30 sec; Timeout: 15 sec
. 2017-06-27 18:29:29.447 Disable Nagle: No
. 2017-06-27 18:29:29.447 Proxy: None
. 2017-06-27 18:29:29.447 Send buffer: 262144
. 2017-06-27 18:29:29.447 UTF: Auto
. 2017-06-27 18:29:29.447 FTPS: None [Client certificate: No]
. 2017-06-27 18:29:29.447 FTP: Passive: Yes [Force IP: Auto]; MLSD: Auto [List all: Auto]; HOST: Auto
. 2017-06-27 18:29:29.447 Local directory: default, Remote directory: home, Update: Yes, Cache: Yes
. 2017-06-27 18:29:29.447 Cache directory changes: Yes, Permanent: Yes
. 2017-06-27 18:29:29.447 Recycle bin: Delete to: No, Overwritten to: No, Bin path:
. 2017-06-27 18:29:29.447 Timezone offset: 0h 0m
. 2017-06-27 18:29:29.447 --------------------------------------------------------------------------
. 2017-06-27 18:29:29.447 Connecting to *************** ...
. 2017-06-27 18:29:29.572 Connected with **************. Waiting for welcome message...
< 2017-06-27 18:29:30.040 220 ProFTPD Server
> 2017-06-27 18:29:30.040 USER ******
< 2017-06-27 18:29:30.164 331 Password required for *******
> 2017-06-27 18:29:30.164 PASS *****
< 2017-06-27 18:29:30.289 230 User ***** logged in
> 2017-06-27 18:29:30.289 SYST
< 2017-06-27 18:29:30.414 215 UNIX Type: L8
> 2017-06-27 18:29:30.414 FEAT
< 2017-06-27 18:29:30.539 211-Features:
< 2017-06-27 18:29:30.539 AUTH TLS
< 2017-06-27 18:29:30.539 CCC
< 2017-06-27 18:29:30.539 CLNT
< 2017-06-27 18:29:30.539 EPRT
< 2017-06-27 18:29:30.539 EPSV
< 2017-06-27 18:29:30.539 HOST
< 2017-06-27 18:29:30.539 MDTM
< 2017-06-27 18:29:30.539 MFF modify;UNIX.group;UNIX.mode;
< 2017-06-27 18:29:30.539 MFMT
< 2017-06-27 18:29:30.664 MLST modify*;perm*;size*;type*;unique*;UNIX.group*;UNIX.groupname*;UNIX.mode*;UNIX.owner*;UNIX.ownername*;
< 2017-06-27 18:29:30.664 PBSZ
< 2017-06-27 18:29:30.664 PROT
< 2017-06-27 18:29:30.664 REST STREAM
< 2017-06-27 18:29:30.664 SIZE
< 2017-06-27 18:29:30.664 SSCN
< 2017-06-27 18:29:30.664 TVFS
< 2017-06-27 18:29:30.664 211 End
> 2017-06-27 18:29:30.664 CLNT WinSCP-release-5.8.4
< 2017-06-27 18:29:30.788 200 OK
> 2017-06-27 18:29:30.788 OPTS UTF8 ON
< 2017-06-27 18:29:30.913 500 OPTS UTF8 not understood
. 2017-06-27 18:29:30.913 Connected
. 2017-06-27 18:29:30.913 --------------------------------------------------------------------------
. 2017-06-27 18:29:30.913 Using FTP protocol.
. 2017-06-27 18:29:30.913 Doing startup conversation with host.
> 2017-06-27 18:29:30.913 PWD
< 2017-06-27 18:29:31.038 257 "/" is the current directory
. 2017-06-27 18:29:31.038 Getting current directory name.
. 2017-06-27 18:29:31.038 Startup conversation with host finished.
< 2017-06-27 18:29:31.038 Script: Active session: [1] ******@************
> 2017-06-27 18:29:31.085 Script: pwd
< 2017-06-27 18:29:31.085 Script: /
> 2017-06-27 18:29:33.706 Script: put -delete -nopermissions -preservetime -transfer="ascii" -- "\\ukdews309\usw\live\Vision\**************\FTPOut\1017561.properties" "/5749201/TargetDir/1017561.properties"
. 2017-06-27 18:29:33.706 Copying 1 files/directories to remote directory "/5749201/TargetDir/"
. 2017-06-27 18:29:33.706 PrTime: Yes; PrRO: No; Rght: rw-r--r--; PrR: No (No); FnCs: N; RIC: 0100; Resume: S (102400); CalcS: No; Mask: 1017561.properties
. 2017-06-27 18:29:33.706 TM: A; ClAr: No; RemEOF: No; RemBOM: No; CPS: 0; NewerOnly: No; InclM: ; ResumeL: 0
. 2017-06-27 18:29:33.706 AscM: *.*html; *.htm; *.txt; *.php; *.php3; *.cgi; *.c; *.cpp; *.h; *.pas; *.bas; *.tex; *.pl; *.js; .htaccess; *.xtml; *.css; *.cfg; *.ini; *.sh; *.xml
. 2017-06-27 18:29:33.706 File: '\\ukdews309\usw\live\Vision\**************\FTPOut\1017561.properties' [2017-06-27T17:29:12.879Z] [790]
. 2017-06-27 18:29:33.706 Copying "\\ukdews309\usw\live\Vision\**************\FTPOut\1017561.properties" to remote directory started.
. 2017-06-27 18:29:33.706 Ascii transfer mode selected.
. 2017-06-27 18:29:33.706 Starting upload of \\ukdews309\usw\live\Vision\**************\FTPOut\1017561.properties
> 2017-06-27 18:29:33.706 TYPE A
< 2017-06-27 18:29:33.830 200 Type set to A
> 2017-06-27 18:29:33.830 PASV
< 2017-06-27 18:29:33.955 227 Entering Passive Mode (**************,199,120)
> 2017-06-27 18:29:33.955 STOR 1017561.properties
< 2017-06-27 18:29:34.080 150 Opening ASCII mode data connection for 1017561.properties
< 2017-06-27 18:29:34.345 226 Transfer complete
> 2017-06-27 18:29:34.345 MFMT 20170627172912 1017561.properties
< 2017-06-27 18:29:34.470 213 Modify=20170627172912; 1017561.properties
. 2017-06-27 18:29:34.470 Upload successful
. 2017-06-27 18:29:34.470 Transfer done: '\\ukdews309\usw\live\Vision\**************\FTPOut\1017561.properties' [790]
> 2017-06-27 18:29:34.548 Script: put -nopermissions -preservetime -transfer="binary" -- "\\ukdews603\Vision Art\Art\27\276962_205558567.tif" "/5749201/TargetDir/1017561.tif"
. 2017-06-27 18:29:34.548 Copying 1 files/directories to remote directory "/5749201/TargetDir/"
. 2017-06-27 18:29:34.548 PrTime: Yes; PrRO: No; Rght: rw-r--r--; PrR: No (No); FnCs: N; RIC: 0100; Resume: S (102400); CalcS: No; Mask: 1017561.tif
. 2017-06-27 18:29:34.548 TM: B; ClAr: No; RemEOF: No; RemBOM: No; CPS: 0; NewerOnly: No; InclM: ; ResumeL: 0
. 2017-06-27 18:29:34.548 AscM: *.*html; *.htm; *.txt; *.php; *.php3; *.cgi; *.c; *.cpp; *.h; *.pas; *.bas; *.tex; *.pl; *.js; .htaccess; *.xtml; *.css; *.cfg; *.ini; *.sh; *.xml
. 2017-06-27 18:29:34.548 File: '\\ukdews603\Vision Art\Art\27\276962_205558567.tif' [2017-06-23T14:47:46.000Z] [12320500]
* 2017-06-27 18:29:34.564 (EOSExtException) Error retrieving file list for "\\ukdews603\Vision Art\Art\27\276962_205558567.tif\*.*".
* 2017-06-27 18:29:34.564 System Error. Code: 267.
* 2017-06-27 18:29:34.564 The directory name is invalid
. 2017-06-27 18:29:34.564 Asking user:
. 2017-06-27 18:29:34.564 Error listing directory '\\ukdews603\Vision Art\Art\27\276962_205558567.tif\'. ("Error retrieving file list for ""\\ukdews603\Vision Art\Art\27\276962_205558567.tif\*.*"".","System Error. Code: 267.","The directory name is invalid")
< 2017-06-27 18:29:34.564 Script: Error listing directory '\\ukdews603\Vision Art\Art\27\276962_205558567.tif\'.
< 2017-06-27 18:29:34.564 Script: Error retrieving file list for "\\ukdews603\Vision Art\Art\27\276962_205558567.tif\*.*".
< 2017-06-27 18:29:34.564 System Error. Code: 267.
< 2017-06-27 18:29:34.564 The directory name is invalid
* 2017-06-27 18:29:34.564 (EScpSkipFile) Error listing directory '\\ukdews603\Vision Art\Art\27\276962_205558567.tif\'.
* 2017-06-27 18:29:34.564 Error retrieving file list for "\\ukdews603\Vision Art\Art\27\276962_205558567.tif\*.*".
* 2017-06-27 18:29:34.564 System Error. Code: 267.
* 2017-06-27 18:29:34.564 The directory name is invalid
. 2017-06-27 18:29:34.564 Script: Failed