Restored encrypted file from Time Machine

Hello,
I restored a file that I encrypted from a Time Machine backup which I know the password for, but Espionage is asking for the master password and to my chagrin I have no clue of what it is. When I put in the password for the folder in encrypted I get " Failed to mount image for '(File)' Check the log", and "Couldn't unlock '(File)' because image failed to mount". I tried to follow all of the reset instructions to no avail. Someone please tel me what am I doing wrong?
I restored a file that I encrypted from a Time Machine backup which I know the password for, but Espionage is asking for the master password and to my chagrin I have no clue of what it is. When I put in the password for the folder in encrypted I get " Failed to mount image for '(File)' Check the log", and "Couldn't unlock '(File)' because image failed to mount". I tried to follow all of the reset instructions to no avail. Someone please tel me what am I doing wrong?