Did you copy over all the other requirements as well? Did it work at one point and accidentally get disabled?
Depending on how you're updating Atmosphere, you could be overwriting or deleting the old Tesla files. After updating Atmosphere, download and re-install / re-add Tesla over the top of it. If you've already done that, then I'd be just as stuck as you. 
Similar threads
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SylverReZ:
@Veho, Sounds and smells like bullshit. They don't give you cancer, and California should know that. I don't get why they stick labels that say "may or may not cause reproductive harm or cancer". -
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Psionic Roshambo:
Mame should be two sets one for preservation of everything and one set for people who just want to play and enjoy the old old ganes -
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SylverReZ:
@Psionic Roshambo, Believe Japan was going to make it legal at some point, according to a Kotaku story.+1
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Psionic Roshambo:
I swear like 99% of arcade games wouldn't even exist these days outside of MAME the arcade machines are old and busted very few ever saw any sort of home conversion
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SylverReZ:
@Psionic Roshambo, There's a lot of obscure Japanese arcade titles that are either lost to time or dumped.+1
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Psionic Roshambo:
I mean if a company could use AI to do the work of a home conversion for essentially free why not? The rights for some games are completely lost though
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