Hi, I'm very new to Calculators and I just recently purchased the Casio 9860GII SD. I found and downloaded a text editor software from here; https://sourceforge....s/edit-fx9860g/ and when I first copied it to my Storage Memory and Started the Add In Program It worked, but the second time I tried it said "System Error, Illegal Code" Does anyone know how to fix this?
Edited by Aryamikhail, 05 December 2021 - 03:51 PM.