file in a batch did not get sent

We have a script that sends files daily. In today's session, had a batch of 11 files. Ten files got sent and 1 did not. Please look at the winspc.log below. The file that did not get sent is: C:\ftp\7022%20120507%015643

The log states a message about 473 skipped.... Is this the indication the file was not sent?

Where else should I look for an issue?
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Winspc.log
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. 2012-05-07 05:30:04.232 File: "C:\ftp\7021%20120504%145014"
. 2012-05-07 05:30:04.232 Copying "C:\ftp\7021%20120504%145014" to remote directory started.
. 2012-05-07 05:30:04.232 Binary transfer mode selected.
. 2012-05-07 05:30:04.232 Opening remote file.
> 2012-05-07 05:30:04.232 Type: SSH_FXP_OPEN, Size: 53, Number: 3843
< 2012-05-07 05:30:04.263 Type: SSH_FXP_HANDLE, Size: 13, Number: 3843
> 2012-05-07 05:30:04.263 Type: SSH_FXP_WRITE, Size: 3637, Number: 4358
> 2012-05-07 05:30:04.263 Type: SSH_FXP_CLOSE, Size: 13, Number: 4612
> 2012-05-07 05:30:04.263 Type: SSH_FXP_SETSTAT, Size: 49, Number: 4105
< 2012-05-07 05:30:04.357 Type: SSH_FXP_STATUS, Size: 24, Number: 4358
< 2012-05-07 05:30:04.560 Type: SSH_FXP_STATUS, Size: 39, Number: 4612
< 2012-05-07 05:30:04.560 Status code: 0
< 2012-05-07 05:30:04.560 Type: SSH_FXP_STATUS, Size: 24, Number: 4105
< 2012-05-07 05:30:04.560 Status code: 0
. 2012-05-07 05:30:04.560 File: "C:\ftp\7022%20120507%015643"
. 2012-05-07 05:30:04.560 Copying "C:\ftp\7022%20120507%015643" to remote directory started.
. 2012-05-07 05:30:04.560 Binary transfer mode selected.
. 2012-05-07 05:30:04.560 Opening remote file.
> 2012-05-07 05:30:04.560 Type: SSH_FXP_OPEN, Size: 53, Number: 4867
< 2012-05-07 05:30:04.607 Type: SSH_FXP_HANDLE, Size: 13, Number: 4867
> 2012-05-07 05:30:04.607 Type: SSH_FXP_WRITE, Size: 12669, Number: 5382
. 2012-05-07 05:30:43.889 473 skipped SSH_FXP_WRITE, SSH_FXP_READ, SSH_FXP_DATA and SSH_FXP_STATUS packets.
> 2012-05-07 05:30:43.889 Type: SSH_FXP_CLOSE, Size: 13, Number: 66308
> 2012-05-07 05:30:43.889 Type: SSH_FXP_SETSTAT, Size: 49, Number: 5129
< 2012-05-07 05:30:43.921 Type: SSH_FXP_STATUS, Size: 24, Number: 65798
< 2012-05-07 05:30:44.093 Type: SSH_FXP_STATUS, Size: 24, Number: 66054
< 2012-05-07 05:30:44.280 Type: SSH_FXP_STATUS, Size: 39, Number: 66308
< 2012-05-07 05:30:44.280 Status code: 0
< 2012-05-07 05:30:44.280 Type: SSH_FXP_STATUS, Size: 24, Number: 5129
< 2012-05-07 05:30:44.280 Status code: 0
. 2012-05-07 05:30:44.280 File: "C:\ftp\7023%20120507%020426"
. 2012-05-07 05:30:44.280 Copying "C:\ftp\7023%20120507%020426" to remote directory started.
. 2012-05-07 05:30:44.280 Binary transfer mode selected.
. 2012-05-07 05:30:44.280 Opening remote file.
> 2012-05-07 05:30:44.280 Type: SSH_FXP_OPEN, Size: 53, Number: 66563
< 2012-05-07 05:30:44.311 Type: SSH_FXP_HANDLE, Size: 13, Number: 66563
> 2012-05-07 05:30:44.311 Type: SSH_FXP_WRITE, Size: 32764, Number: 67078
. 2012-05-07 05:30:47.890 43 skipped SSH_FXP_WRITE, SSH_FXP_READ, SSH_FXP_DATA and SSH_FXP_STATUS packets.
> 2012-05-07 05:30:47.890 Type: SSH_FXP_CLOSE, Size: 13, Number: 72964
> 2012-05-07 05:30:47.890 Type: SSH_FXP_SETSTAT, Size: 49, Number: 66825
< 2012-05-07 05:30:48.030 Type: SSH_FXP_STATUS, Size: 24, Number: 72454
< 2012-05-07 05:30:48.061 Type: SSH_FXP_STATUS, Size: 24, Number: 72710
< 2012-05-07 05:30:48.311 Type: SSH_FXP_STATUS, Size: 39, Number: 72964
< 2012-05-07 05:30:48.311 Status code: 0
< 2012-05-07 05:30:48.311 Type: SSH_FXP_STATUS, Size: 24, Number: 66825
< 2012-05-07 05:30:48.311 Status code: 0
. 2012-05-07 05:31:09.390 Closing connection.
. 2012-05-07 05:31:09.390 Sending special code: 12
. 2012-05-07 05:31:09.390 Sent EOF message
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Thank you,
-Tim

There's no issue in the log. Seems the file was transferred correctly.
The "473 skipped" means that those packet were just not logged. If you increase logging level you will get all packets logged. But that's hardly useful.

1. I am connecting to SFTp production by using winscp.
2. getting error message "Turn off Optimize connection buffer size". :(