Problems w/ Briefcase & VPN?

Good afternoon --

I have a briefcase that contains files from my persnal network share at
work. To sync it from home, I VPN to the office, connect to the share and
try to Update All. Howver, on Vista, all I ever get are errors. Right now,
I get "An unknown error has occurred. Some of your files were not copied."

Actually, syncing the briefcase at the office doesn't work, either, now that
I think about it.

I simply do a Copy and Paste of the files I want in the briefcase after I
first create it. This is the 3rd briefcase with which I get errors.

Thanks,
Michael