Moving to T3-M4's Astromech Droid Center forum...
Regarding KSE: Can you take a screenshot regarding the "blank thing" that you're seeing? Do your symptoms occur for all the savegames? Do any error messages appear? Are you pressing both Apply and Commit Changes? Does it say it wrote the savegame successfully?
Regarding KotOR Tool: I have no idea what you're talking about. Can you be more specific? Again screenshots would help.
Regarding TSL Patcher: Changes.ini is the instruction file created by ChangeEdit.exe. You will need to follow stoffe's instructions very carefully as you get acquainted with the utility. There are specific steps you need to follow to set up a new mod, all laid out in clear detail in the readme.