Sometimes I do not see that though. For example, “Cats chase dogs.” works fine provided I don’t forget the period. If I forget the period, it is “No parse” but no error.
(2) The punctuation used to be optional, no? (Not that it’s a problem.)
Right. Well, I am not sure what is going on with my setup… @arademaker, this is just the OSX binaries, the latest version? The ERG version I got from here: http://www.delph-in.net/erg/
The SB-INT:INDEX -1 error doesn’t occur in the ‘classic’ LKB because a bug in ERG-1214’s idiom-rel-p function is not trapped by Allegro CL (due to a misguided attempt by the implementors at Franz to improve efficiency). But anyway, the bug is fixed in ERG-2018.