where do i find the back up file for last successfully loaded config file for Tixati and in what folder do i need to paste it before starting tixati again

in linux it will be a hidden folder in your home folder named '.tixati'.
i think it is in roaming in windows.

copy whole .tixati folder before doing anything.
this is an example:
delete core2.dat
rename core2.dat.lastloadok.dat to core2.dat
run tixati

I tried what you suggested but it did not work Is there anything else I could try

I tried what you suggested but it did not work Is there anything else I could try