Not yet.
There's a possibility that Ud is finally a number so large it overflows the game in some way, I haven't gotten as far as you.
I haven't even played I believe and I get this error
I highly doubt that's the issue; if it was, I would expect it to crop up much earlier in the game. An unsigned (non-negative) 64-bit integer cannot even store one sextillion (1021) which is much smaller than one undecillion (1036).
