Well, I just want to add some attributes bonus and feat requirements to make these sabers more like TOR-classes, so I used normal lightsabers as models. As far as I can remember, the first thing I did is to add attributes bonus, all these bonuses, requirements and penalties and so on and set a unique model number like g_w_dblsbr076 for my Sith Assassin's Double-bladed Lightsaber, for example, based on the model g_w_dblsbr076. I intended to make a red one. Then I used red double-bladed saber's tga file, which is iw_dblsbr004, changing its name to iw_dblsbr076, for the thumbnail. After that, I used cheat to attain that saber, but when I equipped the saber, it emitted blue blade and when I used workbench to examine its upgrade, there was no color crystal in the middle slot. As I said above, the game crashed when I clicked that empty middle slot.
Then I tried to find u_l_colo_04.uti for a red crystal, changing its name, tag, model version and the other thing through K-GFF editor to 76, also making a iw_sbrcrstl_076.tga file. By using KOTOR tool, I extracted a mdl file and changed its name to ....76. Like the Bundle Tutorial on DeadlyStream showed, I viewed the file through hex editor and changed each 01 in w_lsabrered01 to 02. I thought there were nothing else to do because there were nothing additional for me to add in a txt file and saved the files, extracting mdx file and changing its name. Dragging all these files to the override folder, opening the game, I used cheat to attain the saber again and this time, when I clicked the saber on equipment screen, the game crashed.
My intention is simple: to bind a normal red crystal in my no-crystal-custom-made Sith Assassin's saber. But I don't know how to do this.