Edit: Thought this was the chance cubes mod, not a repository of just custom rewards, deleted

Edit 2: Oh, wait, it really is the mod. Here's what I had posted:

I am building a modpack. There is a lot of JSON dependant mods in it.
Today at least one of my JSON files stopped loading after updating a couple mods, because an error in another file that was being prioritized was shutting down JSON reading, as far as I can tell.

http://pastebin.com/02qLxSS7

Specifically, the errors come from trying to read these files:
http://http://i.imgur.com/XXHNN4F.png
http://http://i.imgur.com/MfRhezf.png
http://http://i.imgur.com/KYKYN7h.png
http://http://i.imgur.com/hm5fBZN.png

Which afaik should look like this instead:
i.imgur.com/XXHNN4F.png
i.imgur.com/MfRhezf.png
i.imgur.com/KYKYN7h.png
i.imgur.com/hm5fBZN.png

sorry, you links to your images are not valid links

That was my point, but I posted in wrong mod.

...And curseforge sends me back here, meaning I was right in the first place. Oops.

What is you problem? I don't fully understand

Minecraft is trying to load something through those broken invalid links, which is causing JSON reading methods to break.
I believe the links to come from this mod, as far as I can tell.
See lines 717, 744, 771, and 798 of the pastebin.

Because of this, minecraft has stopped reading an important file entirely.

Chance Cubes does not try to access and imgur files

OK, thank you. Then that answers my question. Doesn't solve my problem, but that means it's coming from another mod that I updated today. Which means I have to remember which ones I updated. Thanks.