Why does my VirtualSAFE vault prevent me from putting in files larger than 4 GB?

Why does my VirtualSAFE vault prevent me from putting in files larger than 4 GB?

This limitation is due to Windows not being able to handle files larger than 4GB on WebDAV. The Vault is essentially a virtual drive based on WebDAV technology. We are looking at working around this limitation by using technology other than WebDAV in future versions.