We have updated to 1.6.3 and have discovered that we are not able to upload new documents. We can upload via Batch Upload, however that is inconvenient and inconsistent with a working component.
We have also noticed that we cannot download the file - the files size appears as "Empty" on the info screen and a null file downloads.
Seems something not correct here. Could you please submit a support ticket sending us super admin account of your site so that I can check to see what's wrong and get it sorted for you ?