Currently i'm oblivious to what file exactly is causing this...
i thought it was something with the amouth of items i have as the exchange of the items.rvdata did not make the error pop up
however when i changed back to Verify that thesis the problem did not occur, then when exchanging everything -> error pops up again
However can say it's not a script issue tho. must be something in the data folders :/
EDIT: It seems to be a problem because the Script cannot call the skills element ^^'' as they're not Basis Elements :X
EDIT2:
For everyone out there with Custom added Elements
If you run into this problem too add more numbers to this line
CI_ITEM_ELEMENT_ICONS = [132, 2, 4, 14, 16, 12, 138, 137, 104, 105, 106, 107,
109, 110, 111, 112, 112, 122]
As you can see ^ has 3x 112 (as i have a total of 18 used elements (Added Twilight and Blood as an Element)
Thanks to modern algebra for the help tho if you didn't ask me to send you a new project where you can take a look at i'd never found out that it wasn't a compability error but my own stupidity for not carefully reading what the script said ^^''