Hi, Lester,
The vitalEsafe (previously WebSafe) program is written by a third party developer. It may be that there is an error occurring when a backup is trying to be uploaded to their website for storage and that this is being written to a .log file. You would have to contact them for assistance with this.
Here is a link to their website where, if you have an account set up, you should find support contact information:
http://www.vitalesafe.com/