C++ errors

So why come, exactly, does this game feel compelled by some mystical force to issue C++ errors every time I click on ANYTHING? The game will now no longer...
Save any work that I've done.
Load any test maps.
Let me test my engines.
I've installed it and re installed it multiple times.
Edit: The exact quote the error gives me is as follows:
Lua Error:
tolua++ dbcall failed!: [string "--client\functional\CCarManager.lua..."]:151: attempt to index field 'Results' (a nil value)
Save any work that I've done.
Load any test maps.
Let me test my engines.
I've installed it and re installed it multiple times.
Edit: The exact quote the error gives me is as follows:
Lua Error:
tolua++ dbcall failed!: [string "--client\functional\CCarManager.lua..."]:151: attempt to index field 'Results' (a nil value)