Items I added to my server are glitched?

[mikumiku]

It's been a while since I worked on my own Pangya server. I lost the files I originally had in a reformat mess-up, so I had to put in the items I wanted all over again.
I have no idea what I did wrong here.

To start off, I put in the Dealer Sets like I did before. I thought I implemented them the same way: put model files in avatar folder, edit Part.iff, repack, replace server .iffs. I put the items in my inventory via Add Item Procedure, and the icons appear just fine, but when I try to equip them, I get some error (in Thai, as I don't see a way to get an English-translated client anymore), and the items don't properly equip. Does anyone have an idea of what I could have missed?

[MentaL]

[Tsukasa]

You're probably missing one or more subparts and/or textures (copied the mask textures?) . Copy the missing subpart entries in Part.iff, copy the models/textures of the subpart and retry.

[mikumiku]

I decided to go back to the start, and I noticed something:
When I first edited pangya_th.iff's Part.iff using FileXplorer, I used the Part.iff from the new pangya_gb.iff. Looking back at the pangya.iff I originally used when I did this the first time a year ago, I noticed that certain values were either placed in different cells, or not even there to begin with. I see a clear pattern between the two, so I'm going to see if I can use this new information to implement even newer sets as well.

EDIT: Okay, so converting to the old value setup doesn't work with new sets; the resulting .iff crashes my loginserver and gameserver.

All I wanted to implement was Hana's Black Cat (Combat) set from a recent gacha. Is there any way at all for me to be able to implement it, or is it impossible with S4.9? I'm willing to go through any tedious process to get just this one set into my server.

EDIT2: It seems that the Combat set wasn't the issue. I don't know why it's happening, but whenever I make an edit to the Part.iff with FileXplorer and replace the old one with it, then try to re-open it, it doesn't open and tells me an error occurred. I'm going to try to edit it manually with a hex editor and see if that works.
EDIT2 P.S.: I'm rather confused here. Why is it that when I add items from a pangya_gb.iff, the server runs (although the items are broken), but when I add items from a pangya.iff, the server doesn't even start up?

EDIT3: I just had a derp moment. Turns out I didn't notice that FileXplorer takes a while to save IFFs, and I would close the program before it finishes doing so.
Everything is working perfectly now.