156B
upload 156b fileset to mydomain.com/156
vanilla install into SUB-directory with demo products
make sure the subdirectory ( /156 in my case ) is appended in every field of the install window.

Change pub folder permissions to 777

Category: mixed product types
Product: sample of document product type $0.93

Add to cart
checkout using check/money order

Admin: change order status to delivered

Go to customer account.
Attempt to download product file

Redirects to ROOT pub folder instead of subdirectory install /156/pub folder
Thus, receive a 404 error because the folder/file does not exist in the Root pub folder

temp product download folder is in the /156/pub folder where expected to be.