[ic] Host Crashed?> HELP

[Administrator]

hello my host crashed and lost my info lucky i had a server backup, but 
when i restored my site the interchange didnt work, then i tried 
uploading just the files i think would restore the cart and it worked 
but only for couple days, then it would say interchange busy or 
something, anyone know what files i need to upload to restore a 
interchange cart? like which files are needed etc???? please thanks alot!
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