automationgame.com

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Lua Error:
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tolua++ dbcall failed!: [string "--client\functional\UnitConversions.lua..."]:287: attempt to perform arithmetic on local 'economy' (a nil value)

You can CTRL+C on this to report it.
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OK
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Trying to load a saved car that I did not complete the engine on (engine did not run yet)

Sounds like you need to start from scratch, if you dont finish something it saves it like that but can not complete the calculations when loaded and will error out. I have had to replace cars/engines in my save folder many times due to weird errors, I tend to backup my cars/engines after each play in their own folder just in case, saved me on my BRC car.