I cannot launch any 1.12.2 modpack with HammerLib installed. So i downloaded the source and debugged it. DaylengthSplashes.java file tries to download the data from https://pastebin.com/raw/U8ZNkcLV url which gets stuck for me because https://pastebin.com is blocked in my country (Türkiye).
I know this is an old version and not supported but at least it will give an idea to people who cannot start game because HammerLib. This problem may exists for other versions of the mod but i did not tested so i am not sure.
Is there any workaround could be done?

Thanks.

has this been addressed? im also experiencing a hanging issue in 1.12.2-

@ChaosDogG it was fixed here in 12.2.47 build

yeah...im still hanging.....
latest.log

am i not allocating enough RAM or...?

Thanks for letting me know! Will push an update to use my own domain instead.