Code:
INSERT INTO rule_values VALUES (0, NPC:MinorNPCCorpseDecayTimeMS, 450000)
That should get rid of it generating an error message. The default value of 450000 came from
common/ruletypes.h:
Code:
RULE_INT ( NPC, MinorNPCCorpseDecayTimeMS, 450000 ) //level<55
In general, it should still use the default value from ruletypes.h, although it is certainly possible there may be an issue there.
Hope this helps.