Expression Media Post-SP Rollup for Microsoft Windows fixes the following issues from Expression Media Service Pack 1:

Nikon D300 12 bit NEF RAW file crashes Expression Media SP1
Custom fields have garbage characters appended to the end of data when opened in Expression Media Service Pack 1
After upgrading to Apple QuickTime 7.4, files/folders added to a Catalog that previously existed are duplicated in the Catalog Folder pane and uses 8.3 naming instead of long file names.