On Adobe's site is does indeed say it's for 5.5, not v5. Verbatim: ' After Effects 5.5.1 update - English, French, and German: The Adobe® After Effects® 5.5.1 update addresses several issues identified in After Effects 5.5. The most significant changes made for this update include: • View options are now saved correctly in the preferences file. • Problems working with Electric Image and 16-bit Maya IFF files are resolved. • New blend modes introduced in Adobe Photoshop® 7.0 are now preserved on import. • Adobe Premiere® 6.5 titles now import as solids instead of "missing footage" placeholders. • Adobe Premiere project import now preserves in and out points for missing footage. • TIFF output from After Effects no longer generates a warning when imported into Photoshop 7.0.1. • Several Standard and Advanced 3D Renderer anomalies are corrected.'