So I managed to move the search window off screen making it completely inaccessible.
Steps to reproduce:
-Enter a long string into the search window, about two times the width of the search window
-Execute the search
-Restart the program
-Open the search window, move the window to the left and off the screen but leave enough on screen to execute a new search
-Enter a small search string, execute the search
-Restart the program, search window is inaccessible off screen
A fix to restore the tool to working order is by editing some registry entries:
Computer\HKEY_CURRENT_USER\SOFTWARE\kambala\Median XL Offline Tools\findDialog\pos
set to @Point(0 0)
Computer\HKEY_CURRENT_USER\SOFTWARE\kambala\Median XL Offline Tools\findDialog\searchHistory
clear this value