Unsupported file formats - Adobe Bridge v11

When I use Adobe Bridge's "Export Custom" panel to export Illustrator (.AI) files I get this error: unsupported file formats. Does anyone know what has changed from about three versions to now?

In Bridge version v10.0.0.124 it worked smoothly with .psd and .ai. But after this version it only works with Photoshop files
(.psd).