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I am using PKSV-UI in Advancedmap and when trying to save it tries to create a new .pksv file in my downloads instead of adding it to the ROM. I am sure this is normal and I am being naive, but I am stuck...
Are you trying to save the text of the script in a file or compile it to the ROM? Because those are two completely different things: saving it will create a ".pksv" file which is basically a normal text file while compiling it will write the script to the ROM.