I got a runtime error after losing all my money.
LINE 233, TAB 4 PLAYERS(GP.WINNER):SETREACTION("WIN", 0 'NOW') ATTEMPT TO INDEX FIELD '?' (A NIL VALUE) IN DOGAMEOVER LINE 233 (TAB 4) IN UPDATE LINE 62 (TAB 4) IN _UPDATE LINE 161 (TAB 0) AT LINE 0 (TAB 0)
Hope this helps you track down the bug.