NTConfig_FreeSpace = 4; // Number of free columns. If less full columns are free stashing is set.
this isn't set properly (not that its causing the error)..but you need to set this to match your diagram

A load config error could be LOTS of things
So im assuming your character is sorceress?
Also can you please turn "file extentions" on (in your folder options) so you can see the FULL file name
because it should be named NTConfig_Sorceress_XLKJKDJ.ntl
Also, are you using version 3.0 or 3.1 (if your unsure mouse of your D2NT Manager.exe and see if its
3.0.0.0
or
3.0.0.1
if its 3.0.0.0 please remove your character name from the file name (as its not neccesary)