DownloadsII 6.0.3 is a maintenance release for vB 4.0.2 compatibility. It fixes the missing CSS when storing CSS as files by using the new CSS rollups. Also the profile tab and AJAX username suggestion are fixed.
Please note that it's meant for vBulletin 4.0.2, which is the new minimum requirement.
DownloadsII 6.0.3 Changelog

Made for vB 4.0.2, not fully compatible with lower versions.
Jelle
- Fixed the downloads profile tab (new template hook naming)
- Added a CSS rollup for storing CSS as files
- Fixed "Exclude Categories" usergroup permission when set to Yes
- Fixed AJAX suggestion with vB 4.0.2 fix