This is against 6.1.98, configured for the Norwegian language.
If LANG is set to no_NO, xpat2 returns this when started:
[teg@pascal teg]$ xpat2
FAILED to open keyboard file "/usr/lib/games/xpat/no_NO/keys"
When you try to open help on a set of rules, I get this:
Warning: Cannot open file /usr/lib/games/xpat/no_NO/help.Klondike; Ingen
slik fil eller filkatalog
(the last part of the sentence means "no such file or directory"). No help
When run after unsetting LANG, the problem disappears.
Upgrading to xpat2 1.06 seems to solve the problem.