I know this is old Ohio but I've been researching this game.
I wish I would have seen this post when it was originally posted
but SB000414 is "Munster Match" - a different game.
I think you needed to use one of these I pasted below ( they show theSG chip pairs as well)
but the list doesn't tell me which one is a 2/3/or 5 coin game.
You
know how IGT loves to label things backwards!
IGT SB000542 THE MUNSTERS SG000276 U21 27C4002 66HA
IGT SB000552 THE MUNSTERS SG000276 U21 27C4002 3F42
IGT SB000553 THE MUNSTERS SG000276 U21 27C4002 903A
Also, "invalid pointer" sounds much more of a OS (RFA) error than a chip eprom error.
I don't know presently which specific RFA is needed for that game but
I've found that the RFA10025 that goes in the side slot of the LCD computer -
seems to work for all of my Vision games.