A question for any RPG Maker user

[ROMeo]

I got recently into RPG maker (RPG Maker 2003), and while I got the basic things working nice and tidy already, I'm having problems when creating custom content.<p>I created a new Charset file by editing an existing one on Windows' Paint, and it worked just fine, but when I tried the same to create a custom Chipset file in the same way, RPG maker won't recognize it if placed in the same folder, and when I try to use the Import option I get an "Unsupported PNG" error message. Is there something I'm missing about Chipset files?

[gm2987]

Change it to a bmp.