Odd error after running for 6+ hours

I'm getting a WinSCP/PowerShell error. The odd thing is, it happens after the script has been running for 6+ hours without issue. It seemed to happen in the middle of a copy.

My script output:
The WinSCP Log is nothing remarkable.. here are the last few lines:
... and then the log just stops abruptly

Please enable Session.DebugLogPath and post the log (the complete session log might still be useful too)

What session.DebugLogLevel setting works best for you? I tried setting is to 2, but it's then full of all sorts of seemingly worthless data.

Also, before I could share any data, I would need to sanitize the logs to remove any identifiable information (IE: remove/obfuscate filenames so you don't see something like "SecretCancerCure.txt") By chance, do you happen to have a script already written that automatically sanitizes the logs?

For start, please keep the default 0 level.
I do not have such script.

okay... I have one regular log and debug log, however the debug level was set to -1. I'll re-run it at '0'.

The one I have now did end with the error:

Exception calling "SynchronizeDirectories" with "7" argument(s): "Error formatting a string: Index (zero based) must be greater than or equal to zero and less than the size of the argument list..

and the log size for each file is less than a meg.

These log sizes are all over the board though. I have a different debug log for a different copy that is currently at 356gig and growing.

Do you have a private dropbox/email that I can send this to? Even if I'm able to clean up these files, I'm not comfortable posting them to a forum for everyone to see.

For this error, a full stack trace might be enough for a start.

Given that one of my debug logs was 500meg, I attempted to truncate the information for you. Attached are the truncated logs for 2 uploads that each failed with the "Exception calling "SynchronizeDirectories" with "7" argument(s): "Error formatting a string: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.."" error.


At the top of each document is data from the normal log file (essentially the header and the bit about the last copy being attempted before the error occurred). At the bottom of each document is the data from the debug log (header and info about last file being copied).

Let me know if you need more info. I attempted to sanitize the logs while not going overboard.