I see the error in the slings, I managed to disable the Hit event in the editor for the slings, I've no idea how I managed to do that.

We all have those kind of "Coding" moments, happens somewhere between starting the work and before the 1st cup of coffee usually.
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I also see the bumpers don't fire as they use to in 1.0. I guess it has to do with the physics change. I opted to use the the large gravity constant and reduce the slope, as PK wrote how it was in the Ultrace machines. I don't thing that is a good thing. I had never seen a ball to stop in front a rubber, and now they do, I had to nudge a little to free the ball from on top of a rubber post.. So I guess I'll be back to older settings.
I had to nudge it a few times myself to free the ball, also the Jet Bumpers aren't scoring a hit either.
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I'll test a little the table with the old settings, enable the slings and I'll post a new version in a few hours. But please keep posting any other error you may find.
Wow.. thanks look forward to the updated one. If I see anything else I'll post.
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About the switch 32 error in the rom: yes it happens to me too. Switch 32 is part of the trough. I have checked the trough definition in the script looks ok to me, so I have no clue to why it isn't working. But the balls come out and multiball works. So I'll just ignore it for now.
I took a stab at this figuring maybe something got set in the nVram for the ROM so I just deleted that file in the nvram directory and.... well no more error on startup.
Thanks Again