H. G. Muller wrote on Tue, Oct 3, 2023 12:04 PM UTC:
OK, that helps. And I found a much shorter game that evokes the same error:
1. e4 d5
2. Sxd5 Nb6
3. Sc5
Then 3. e5 crashes the preset. There is some unexpected behavior here, in that setting 'to' to a nonexisting element of an array sets it to #to, instead of an invalid value, like it makes the variable disappear altogether. But I should be able to solve this now.
OK, that helps. And I found a much shorter game that evokes the same error:
1. e4 d5
2. Sxd5 Nb6
3. Sc5
Then 3. e5 crashes the preset. There is some unexpected behavior here, in that setting 'to' to a nonexisting element of an array sets it to #to, instead of an invalid value, like it makes the variable disappear altogether. But I should be able to solve this now.