You can find the loot.xml that results from your xpath changes in your savegame in a directory called "ConfigsDump". By looking at this you can see whether everything was changed exactly as you expected it. Also by posting the changed code you make it easier for people here finding the mistake.
Pictures of logfiles are useless most of the time. For example if some of your lines could not be adapted to the original loot.xml this would be shown much earlier in the logfile. Please use pastebin for the logfile and link to that.