Some problems with iDeaS.

here are the step by step

1. the message when u open the ideas which is "unable to read" is a bug.. no one can take that off.

2. when playing final fantasy 3.. set the save file type to 64k and open the rom.
besure to turn off the audio to gain speed and prevent the emulator from crashing
or. open the final fantasy 3 then set the save type to 64k then press the reset button.

3. Final finatasy 3 is playable but limited speed. so be patience.. see my compiled screen screenhots..

4. try to set the frameskip to 2.. and increase cpu speed to 75% or 100% to improve speed..

goodluck and try it..