Why would you want to reset xplorer² settings? Sometimes things get screwed up after over-tweaking, and xplorer² won't start, or display in a funny way. Possibly an uninstall will bring back order. But you will also lose all your favorite settings (bookmarks etc). That's why I made a REG script that resets the most basic settings (which are likely to blame for problems) and leaves the bulk intact, so you can have your cake and eat it!
The list of settings removed (binMiscOptions, binMoreOptions etc) are described in registry.txt. They won't fit everybody's needs but they are worth a try before more drastic measures are taken (e.g. full uninstall). Here is how you go about with the partial reset:
Download and unzip the file, then double-click on RESET.REG while xplorer² is not running