Halim Şibay Tuğsavul

I have created a VeraCrypt Vault in my hard disk. It was working last week, but now when I put in my passwond, I am met with: "Operation failed due to one or more off the following: - Incorrect password. ........... - Volume uses an old algorithm that has been removed. - TrueCrypt format volumes are no longer supported." But my password is correct and I have not removed an algorithm consciously. So how an I change TrueCrypt ormat volumes to the presently correct one ? Please help. Halim