Firstly, welcome to the site!
So creating a save point is two parts, one there needs to be the NPC created on the map, NPC 111 to be exact, with the 8.6 flag enabled for it's animation, and the walk under flag checked. Now this NPC needs to have it's event field set to 5EB3, which is $CA5EB3 (simply returns), or do nothing. Make sure you are putting that for the NPC's event field or it will freeze - when you create an NPC by default it sets it's event to 0, which will freeze the game, and I suspect that's what's happening to you when it doesn't function right.
The second part is there needs to also be an event trigger placed in the same exact spot as the NPC. And for that event trigger it needs to be set to 29AEB, which is indeed the code you posted and that looks correct. Just make sure to put that in the field property section, not the entrance event. The entrance event is for the whole map.
If you do both these things your save point should work. Just make sure you are copying over everything correctly using another save point as a reference, as they are all the same.
So creating a save point is two parts, one there needs to be the NPC created on the map, NPC 111 to be exact, with the 8.6 flag enabled for it's animation, and the walk under flag checked. Now this NPC needs to have it's event field set to 5EB3, which is $CA5EB3 (simply returns), or do nothing. Make sure you are putting that for the NPC's event field or it will freeze - when you create an NPC by default it sets it's event to 0, which will freeze the game, and I suspect that's what's happening to you when it doesn't function right.
The second part is there needs to also be an event trigger placed in the same exact spot as the NPC. And for that event trigger it needs to be set to 29AEB, which is indeed the code you posted and that looks correct. Just make sure to put that in the field property section, not the entrance event. The entrance event is for the whole map.
If you do both these things your save point should work. Just make sure you are copying over everything correctly using another save point as a reference, as they are all the same.
We are born, live, die and then do the same thing over again.