Thank you i make some changes as you suggested. I also tested the SOUTH direction from horse stable and it is working. Did you played from restored game state? Maybe something in the engine is not working good when there are changes in code i quess. But i did not change anything in location connections hmmm.
It could be that. I'll start again. I've now got 4 treasures. I'm stuck at the spider. I feel like I need to get the candy from the old female, as that's the only thing that's sweet. I can't dig manure, do anything with young female or the horse and the flies. I'm not sure if piggy is useful, but I wanted to give him the corn. I'll try that after I restart.
In the meantime, here's some more comments:
X NAIL: It holds dog's chain.
X CHAIN: Not here.
GET CHAIN: Not here.
PULL CHAIN: Dog is now free! [Huh? How can I PULL a chain that I can't get and can't see?]
"dog chasses" should be "dog chases".
"Hui is scared strongly" should be "Hui is very scared".
On initial entry to manure pile, after dung beetle disappears, something's missing. It says, "CLOUDS, , MANURE", i.e. double comma (possibly related to the save game state as you suggested above?)
"anytime" should be "any time".
If you quack at roses after rescuing Lui, it still says "*Bush peeps hungrily*".
X THORNS: Pointy and dangerous.
GET THORNS: Not here. [Should say "Too pointy." or something similar.]
"Dui shakes from fears" should be "... fear".
HELP hasn't been overridden at farm.
Also, there's still a few sentences without a full stop at the end. Perhaps do a quick search of your print statements and check that they all have terminating punctuation.