Alright alright, I will help you all... To set progressive mode without crashes, the only way is to set in the folder directory "ini" inside fba, then modify a line inside the text "fbaxxx.ini" :
scroll down till you find the section "video option":
/ / Video Options
nCurrentVideoMode=0 <===change to 1 (interlaced=0,progressive480p=1), then save and exit.
Now your fbaxxx works in 480p mode =) (maybe even change to 720p without any crash I hope)
And nes6250... I can't wait to play your version of fba... any more news about?