Image chooser keeps inserting the same photo -- how to find ID number for thumbnails?

I have WPG2 plugin v3.0.7 with Wordpress v2.8.4 and using Firefox 3.0.11.

The Image Chooser keeps inserting the same photo despite me checking one or more other photos. To be clear -- I select the photo(s) I want and the Image Chooser consistently inserts another photo, usually the first or last photo in the album.

1) Why is Image Chooser doing this and how can I fix it?

2) If I can't fix it, can I manually write in the photo ID number between the wpg2 tags, avoiding using the Image Chooser all together? If so, how do I find the ID number for the photo thumbnails?

Some extra information -- Image Chooser is able to insert the correct images when I click the 'Insert' button at the bottom of the dialog box (which inserts the full size image). The problem I described only happens when I use the top 'Insert' button, which makes use of the tag attributes.

Thank you.