Settings doesn't have "Base upload folder" field

Same here.

Ditto

“Base upload folder” was missing for me too.
If others really need this plugin, try using the old version as i did from this link :

Click this link
Under the “Other Versions” tab, select and download a older version.
Hope it helps.

Changelog v. 3.4 (2013-02-09)
Removed setting for “Base upload folder” as WP core no longer exposes this