When attempting to add a NEW module (not trying to do any updates to the Drupal core), I get this error:
Automatic updating of Drupal core is not supported.
I can't find anything about this related to modules. All of the discussions are related to the core and even go as far as to say to delete the contents of your directory and doing a lot of manipulation. This seems to apply to every module I have tried, whether trying to add by URL or from uploading a file.
Again this is for INSTALLING a NEW MODULE only.