Error while trying to modify

Hi,
Just had the following error while trying to modify an engine:
Step() failed!:[string"..."]:105:attempt to index field 'VVT' (a nil value)
Also added the engine file.
Have fun with it!
Love the game so far!
Best regards;
Thomas Doolaard
Just had the following error while trying to modify an engine:
Step() failed!:[string"..."]:105:attempt to index field 'VVT' (a nil value)
Also added the engine file.
Have fun with it!
Love the game so far!
Best regards;
Thomas Doolaard