Backed up to sparse image on Airdisk, but now can't select it again

[cbrandt]

login item doesn't work. Time capsule and ext disk name are greyed out. It allows me to add the sparse image but when I restart I get the same "there was a problem connecting to the server"cindy's time capsule the share does not exist……." and the kind listed in the login items list changes to unknown.
ANy other ideas? I tried the Automater route as a calendar item to open every night at midnight, but that didn't work. I will try to see if there was something wrong with my Automater instructions.