[Wondering about the Pokemon Crests in the game.]

Outside the Weather Institute on Terajuma, if you show the person the 3 weather TMs (Hail, Sunny Day, Rain Dance) you get a Castform Crest, which activates a weather move upon entry and confers an additional ability based on weather (rain dish, solar power, and I can't determine the one for hail/sandstorm). 
I read someone else mention crests for all John starters and Ledian, but I don't know how to get those and am especially curious on how they could make the latter remotely useful.

Zangoose/Ariados are in the underwater temple in route 6.

 

[V9 - Bug Reporting Thread]

 

I'm pretty sure I obtained the weird diary/saved garbodor, but in the Help Quest involving Dimensional Rifts Erick says you destroyed it. Also, no mention of the weird diary is given at all when speaking to Anabel/Looker when they ask for all info regarding D. Rifts. 

And this isn't a bug and will probably be explained later, but it seems odd for Nightmare Zetta to know, well, anything about his past, let alone produce rift matter, while also saying that he's not the real Zetta and just a part of Melia's nightmare. 

EDIT: Speaking of things that don't make sense, Anabel and Looker also said that tried to make it seem as if Melia was gone. I don't recall what happened too well in the prior episodes, but if Melia supposed to be undercover then why would she try to sign up for a tournament where the participant's names are read on TV? 

[[Corrupted]Corrupted Save File]

Hello. 

I was playing reborn a couple days ago when randomly my file would not be able to load in an unmodded version of Reborn. I for some reason the last save I had recently didn't work either, and any other save I have would go before episode 16, which I would prefer to not replay. 
I've attached the file to this post. Let me know if there is anything I should add. 
Thank you!

Game.rxdata