LUA file error when in sandbox car editor

Over the past day or two the reliability of my copy of Automation has really tanked. Most of these have been video driver errors generated by the OS, but this one was a LUA error generated by the program itself.
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Lua Error:
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tolua++ dbcall failed!: [string "--client\functional\EngineCombustion_Animatio..."]:294: bad argument #1 to 'rad' (number expected, got nil)
You can CTRL+C on this to report it.
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OK
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How I got this: I was designing a car in 2003 (yes, for DerBayer's new challenge) and finished up with the body. I started making an engine then realized I could save time and make things "Flow" with my car company's timeline by picking an already saved engine and then bringing it up to date. Well, when I selected this engine (which happened to be build in 1968) then went back to the engine tab to enter it, it flipped out, gave that error (about fifty times), and crashed.
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Lua Error:
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tolua++ dbcall failed!: [string "--client\functional\EngineCombustion_Animatio..."]:294: bad argument #1 to 'rad' (number expected, got nil)
You can CTRL+C on this to report it.
---------------------------
OK
---------------------------
How I got this: I was designing a car in 2003 (yes, for DerBayer's new challenge) and finished up with the body. I started making an engine then realized I could save time and make things "Flow" with my car company's timeline by picking an already saved engine and then bringing it up to date. Well, when I selected this engine (which happened to be build in 1968) then went back to the engine tab to enter it, it flipped out, gave that error (about fifty times), and crashed.