Confirmed. I also had to point to a directory in the local computer, to have it saved; otherwise it says
Access to the path 'C:\Users\xxx\Documents\Dropbox\_vvvv_patches\___Work\xxx\VL-Zip\Tests\Decompressed' is denied.
@sunep, that firewall is great.
P.S. As a plus, I also hidden the username, and a random folder. I got your back.