I've posted G2Image Version 3.0.2.
It is a bugfix only. If you already have version 3.0 or 3.0.1 working with no issues, you do not need to download it.
Version 3.0.2 Changelog
*Fixed a bug where WPG2 tags and Drupal G2 Filter tags for individual images failed if G2 ImageBlock version was older than 1.0.9. Now degrades gracefully.
Version 3.0.1 Changelog:
*Updated prototype.js, scriptalicious.js, and effects.js to most recent versions. This allows the plugin and LightBox to function correctly on Safari and Opera.
*Fixed a bug where the custom alignment classes were not transferred from the WPG2 G2Image options tab to G2Image.
*Fixed a bug where Chinese Traditional translation was not working on some servers.
*Changed to use full URLs instead of server-relative URLs so that blog entries will display images in web-based RSS aggregators.
*Updated the Italian, Polish, and Chinese Traditional translations.
Please see the G2Image Version 3.0 announcement for more information on changes in v3.0.
G2Image Documentation, G2Image Demo Page, My Family Website