Error Invalid Access to Memory

I'm transferring VMDK files which are roughly 38gb each, and I have 15 of them to transfer via sftp. Winscp will transfer roughly 5.8gb before giving the invalid access to memory error.
I am on a Windows Server 2008 machine transferring to a 2tb USB disk.

Any assistance in getting this resolved would be wonderful. Thankfully error recovery is enabled, but since it won't auto-restart it is a bit of a frustration being that I have to be at the terminal itself. :(

Thanks for a fantastic SCP app btw!! You guys do an amazing job! First bug/problem I've run into with SCP in 10 years.

Are you using the latest version of WinSCP?

If you are, can you send me an email, so I can send you back a debug version of WinSCP to track the problem? Please include link back to this topic in your email. Also note in this topic that you have sent the email. Thanks.