problem with disk & filesystems module

greetings. i am up-to-date with TDE, but i have an issue -- at boot, it stops to tell me that sdc1 and sdd1 are not ready and to wait or hit S. these are my SD cards and i am religious about properly unmounting them before removal. they, after boot and startup of TDE, mount and umount successfully from a terminal window. i went to system settings in hope of finding the issue. what i found was: "The module Disk & Filesystems could not be loaded." possible reasons given were an error during the last upgrade leaving an orphaned control module or "old third party modules lying around." this is not especially helpful. what ought i do, other then reformat and reinstall, which i have neither time nor inclination to do? thanks very much for any help that might be proffered. best, -- dep The shortest distance between you and playing great acoustic guitar: the great new instructional DVDs from Marjorie Thompson, available at www.MarjorieThompson.com