[Dx4win] Power cut problem when running DX4WIN

[5B4AGC]

I was doing a QSL print the other day when we had a power cut.
 
There was no lost QSOs just the QSLs to print info. Which was easily sorted
OK.
 
The problem I have since then has been that I have lost all of my USA county
info.
When I do an F1 with my cursor in the county field there are no counties
displayed in the drop down window.
Also when I try to display my counties in the award menu it displays US
states instead.
Even when I display any USA QSO from my log the county info is missing.
 
Maybe I have currupted my county file list or something, anybody have a
suggestion, what file to I need to install to sort this.
Or should I do a complete new installation?
I am running the very latest version.
 
George 5B4AGC