I don't why, but when BuildCraft is present, Minecraft always blocks when loading at the 6th step without generating any crash report. Here is the log https://pastebin.com/CmzQZv49

we actually had someone talk to us about this on discord yesterday and it is an recipe sorting problem

@AlexIIL would the enum -> class change be enough to fix this or do we need to report this to forge as well?

Its an issue where BuildCraft doesn't register the recipe with the sorter, and forge's default method will loop infinitely if it goes past all of its other defaults.

(This is fixed in dev, and will be pushed in 7.99.4)

Ok it seems to work now, Curse had downloaded the old version. >___<

It still doesn't work, the game still freeze while loading.

Can you upload a new crash report?