Amusing to see the hate again, howsoever i have Zero knownledge about Flyff Server's and how to add stuff into them but, just looking at the Item-Code you used and the Example you have (from your itemspec i assume) there's alot of missmatches, and even a complete other/new structure.
I marked down what i spotted directly, without any knownledge about what those values might be, simply a diff-check.
It seems like the First item code has way more parameters then the 2nd one, which as you name it, was the example.
Shouldn't you just follow the example and insert your new item's stuff into it? I mean I just assume its that easy.
It would also make sense for your error as the worldserver obviously cannot access something that isnt there, or isnt ment to be at that spot.
For me it looks like you copied the first entry from some v19+ specitem while the example below is on a previous version (no clue which one, as said i got no frikkin clue).
Just my 2 cents. Lmk if my tip helped.