try to be a little more descriptive of your problem...
it's hard to understand what you mean from just... "stuf don't show up"..
if you mean that the items and tiles do not appear in the selector at the bottom of the screen then you have tried ( unsucsessfully ) to make some new prototypes or edit old ones, and it has created a blank .lst file, which is where it looks for the list of prototypes to add....
simply delete the .lst file from your "falloutgame"\data\proto\"relevant folder"
(ie the folder for the proto type you tried to edit..
if it's not what you mean then call back with more info..