1.9.91.45943
3ds max 2012, SP2, x64
Get error for line 611, - Runtime error: array index must be positive number, got: 0 <<
Hopped up on cold meds, might not be a real bug. 
If you saw an error, it must be an error…
Will investigate!
I was able to reproduce the problem (which seems to be rooted in a Max bug) and will prevent the error from happening in the future.