I stopped the file from being shared. It already has read and execute permissions on it. I added 'write'. But I still get the exact same error.
This is a WAMP setup. I tried changing the file name to take out spaces, which windows allows. I still get the same error.

In store administration status messages, it says file downloads diretory has been set up and is working. Where is this directory?, Is this where drupal/ubercart is looking for my download files? I would think not, since it is supposed to be outside the webroot.

Why does the test file show up under 'view file downloads' - even now under the new name I gave it - if it isn't in a valid directory?

Under product settings > file path it says "the absolute path...." Isn't the root drive part of the absolute path?

I don't understand this at all. Up to now everything has worked just by me reading the threads and playing around with it. I would appreciate any insight from any one. Thx.