hello

i need some help i got a wallet.dat from gulden from 2 year ago
i stored it on a USB
i have download a new gulden wallet and when it was done i have closed the wallet deleted the new wallet.dat and paste the new one

when i try to open the wallet it says
wallet.dat corrupt, salvage failed

the debug report say
2018-01-12 19:49:26 CDBEnv::Open: LogDir=D:\guldenblock\database ErrorFile=D:\guldenblock\db.log
2018-01-12 19:49:27 Failed to rename wallet.dat to wallet.some numbers.bak

what i think have go wrong is that i took the wallet.dat out without closing the program
this the only copy i got i already tried recuva

i tried python pywallet.py

when i try walletrecover program from bitcoin

without code i get this error
C:\pywallet>pywallet.py --datadir=C:\(folder where my wallet.dat is)\ --dumpwallet
Traceback (most recent call last):
  File "C:\pywallet\pywallet.py", line 5004, in
    db_env = create_env(db_dir)
  File "C:\pywallet\pywallet.py", line 1269, in create_env
    r = db_env.open(db_dir, (DB_CREATE|DB_INIT_LOCK|DB_INIT_LOG|DB_INIT_MPOOL|DB_INIT_TXN|DB_THREAD|DB_RECOVER))
bsddb.db.DBNoSuchFileError: (2, 'No such file or directory -- C:\\yourbkpwallet\\__db.001: No such file or directory')

and with what i guess is the right code i get this error
C:\pywallet>pywallet.py --passphrase=(MyCode) --datadir=C:\(folder where my wallet.dat is)\ --dumpwallet
ERROR:root:Couldn't open wallet.dat/main. Try quitting Bitcoin and running this again.

i think the bitcoin recovery script dont work on a wallet.dat from gulden
i know gulden is a fork of litecoin LTC
but i could not find any scripts for litecoin

so i dont know what to do anymore

i bought 60k coins few year ago and its worth a lot now so the one who can help me out will earn a good bounty

im a windows user