Quoted from ZenTron:

Id think Stern can sell a bunch more GB’s if they vaulted it with a nice big code update.

Quoted from Midway-Man:

I have created a list with bugs in 1.16 I would like to share.
Ghostbusters Bug report 1.16 PRO-Model
1. Add a alert sound for timers running out(Left captive balls)
2. Music within „AYAG Victory laps“ is to dim. Can barely be heard due to the „louder“ sounds effects.
3. Music is not properly stopped at the end of „AYAG“ victory laps. Plays during bonus count.
4. Left orbit skill shot cheat does still work. If you plunge the ball soft so it just rolls over the loop switch but doesn´t make it trough the gate behind Marshmallow-Man and then rolls back again over the loop switch. The skill shot is then still being awarded. ONLY if skill shot doesnt start a scene.
5. Add a sound effect for hurry-up time out for „light playfield multipliers“ at the captive balls.
6. Add a sound effect for „light playfield multipliers“ awarded from captive balls.
7. Extra ball light show shouldn´t play during multiballs. Even if it has a blow off. Balls are lost to easily.
8. Spook Central hurry-up still starts to early if you blow off the start sequence.
9. Add a flasher lightshow during Loopin supers. So the playfield is not so empty and dark.
Use the two red mars dome flashers at the ramp, they actually dont do much in the game. What about leting them each alternate double flash the whole time?
10. „light playfield multipliers“ being awarded incorrect from the captive balls.
If either „light storage facility“ or „light super jackpot“ timer has been started. And during either of those timers the „light playfield multipliers“ timer is being started via a ramp shot. If then „light storage facility“ or „light super jackpot“ timer times out and the balls are being reset, „light playfield multipliers“ is awarded when they shouldn´t be.
11. There are some lights missing at the start animation of Storage Facility multiball.
Library Lock Arrow(red)
Super Jackpot arrow(red)
Spinner Flasher(red)
Stay Puft(red)
12. During the swipe attract mode lamp effect and Bonus count. Some of the lights stay lit, when they should not be. Gear standup target light, depending on which were lit during gameplay.
13. Use the middle Ghost ladder 20,40,60,80,100 during „WARTBY“ to indicate how much ghosts have been collected.
14. Speed up the blink frequency of the right arrow light. When the „River of Slime“ timer runs out.
15. Gear target, Captive ball(left and middle) and River of Slime timers are not properly held if ball is sitting in left scoop, left up-post or subway. For example the ball is being held at the subway to indicate 10 Ghosts collected Storage Facility is lit. The timers can run out.
16. Rework multiball ball save feature. If balls are being kicked out at the left or right scoop. A ballsaver activates for a few seconds and saves drained balls. It´s possible to save multiple balls during one ballsave timer.
-Limit the amount of balls being saved to 1 ball per save.
-Limit the amount of ball saves started via scoops during multiball to 3 or make it adjustable.
17. God mode Adjustments.
-If Game mode is set to God mode, add an adjustment to disable this after a power cycle.
-Add an adjustment for starting God mode via key combination. Both flippers then start. So it can be played on location. Also would be nice to add a display advertisement lets say "Are you a God? Hold both flipperbuttons and press start. To proof you really are!"
18. „light playfield multipliers“ are being awarded via the captive balls, without shooting the captive ball around the loop. Just hitting the ball slightly is enough? Is this on purpose or an issue?
19. Slimer slime is erasing River of Slime shots. If there were some River of Slime shots lit and you hit slimer. The purple slime gets exchanged by green slime? Is this on purpose? Or should both shots stay lit?
20. Slimer is not ending skill shot. If the ghost target is hit to start slimer at the beginning of the ball. Skill shot is still available for collecting. Shouldn´t it end the skill shot?
21. (PRO only) Right ramp registering two hits instead of one, if a ball is being shoot up the right ramp slowly. One of the 3 inline switches registers a hit, if the ball starts then rolling slowly back down the lower exit switch registers another hit.
22. Add a little Slimer multiball. If in Mainplay and ladders are ready to start a mission. Hit the Ghost target 4 times to spell Ghost (G always spelled) and start a little two ball multiball. Without add-a-balls.
23. Librarian mini mode should not be allowed to start during active scenes.
24. There are some lights missing at the extra ball awarded animation.
Stay Puft(Green)
Stay Puft(White)
25. Left captive balls award „light Storage Facility“ even when the final Storage Facility shot is already lit.
-“light Storage Facility“ timer also keeps running during SF multiball if “light Storage Facility“ timer has been started before SF Multiball start. “light Storage Facility“ can be awarded during multiball.
26. Pict-o-pops do award add time when there is nothing to add time.
27. If bonus is maxed at 20X and PKE lanes are completed again. Add an reward.
28. Rework Playfield multiplier rule. These are way to easy to get. So scores went through the roof to quick and easy.
29. Sometimes left captive balls start both „light Storage Facility“ and „light Super Jackpot“ timers at the same time. Also gives out both awards with the same shot.
30. After finishing WARTBY the ball should not be auto plunged at the start of AYAG.
31. The sound quality of some sounds is worse. For example the new speech calls at "Who brought the dog" might be an software issue?
32. Some of the new music and sound effects are played at different volumes.
33. Backbox lightning effects are sometimes reversed to the GI lamp effects. For example at the start of AYAG.
34. Ladder modes are not properly awarded. When the ball drains during grace period after mode timer has run out.
35. Left captive balls give out gear award when „light playfield multipliers“ is collected.
36. If god mode adjustment is changed to normal mode, while in god mode bonus count. You can keep playing a normal game on ball 2 with the score achieved in god mode.