I don't know if it's helpful, but I was recently trying this game out and came across the blank screen issue when bolts are dropped.
One thing I did find, was the screen only went off when FBO Active was at 9 which was the exact time bolts were on screen. When the bolts were gone FBO Active went down to 8 where it started and the screen resumed.
One thing I did find, was the screen only went off when FBO Active was at 9 which was the exact time bolts were on screen. When the bolts were gone FBO Active went down to 8 where it started and the screen resumed.