Which wallet were you using? You probably want to use the same wallet as you were originally using. If you did, you might want to try an older version of that wallet.
As an example, if you were using electrum ltc, you may want to try an older version of the wallet.
that is strange thing, I have tried to find old wallet versions and to try all of them but I count find any of those, then my logic was that wallet is like a program for mail, no matter which one you use mails are still on server... maybe I am wrong - Im graphic designer

thanks