While trying to make changes on *nix machines using Identity Manager for Unix an error is being generated that says something like
"Could not decrypt value"
This occurs on machines where the account has been saved and the master password is provided to perform the action
This can occur if corruption occurs in database where the accounts are stored and are unlocked by the master password.
The only resolution is to remove and re-add the affected machine so that the password is no longer being stored by the master account.